CoPrA, supplied by ColorLogic, is the control center for any profiling task as it produces high-quality profiles with easy-to-use tools in just a few clicks on the user-friendly interface. It is recognized by users worldwide as one of the most useful, intelligent and advanced profiling tools in the industry today.
CoPrA is considered the perfect control center for any profiling task as it enables users to produce high quality profiles with just a few clicks using simple easy-to-use tools. CoPrA can easily create Printer, DeviceLink and SaveInk high-quality ICC profiles with multicolor options for day-to-day color management challenges.
Users can generate gray, RGB, CMY, CMYK or multicolor profiles with just a few simple clicks. Before profiling, CoPrA also handles profile management and analysis by managing all ICC profile systems on the system. Moreover, the tool compares curves and gamut of profiles to data or other ICC profiles. A thorough analysis results in the most optimal recommendation to optimize color profile creation. A swift assessment results in a thorough recommendation and pitch-perfect implementation.
CoPrA sports a user-friendly interface and is recognized by a variety of users worldwide as one of the most useful, intelligent and advanced profiling tools in the industry today. Its ICC-compliant technology is considered flexibly adaptable and customizable to ever-changing profiling needs, making it the perfect color profile creation partner in the industry.
CoPrA is supplied by ColorLogic and comes in go-as-you-grow package that ranges from Basic, M to XXL, depending on the extent of the needs of its users. All packages are flexible and customizable. CoPrA’s advanced features can be added as needed. The solution can also be smoothly integrated into any operating environment and complemented with other ColorLogic solutions. That’s how the ColorLogic software remains flexible enough to adapt to the ever-changing profiling needs.
|Features||CoPrA Basic||CoPrA M||CoPrA L||CoPrA XL||CoPrA XXL|
|RGB, CMYK, Gray & CMY||x||x||x||x||x|
|MultiColor (2 up to 15 channels)||x|
|DeviceLink profile creation by editing|
|RGB, Gray & LAB||x||x||x|
|CMY & CMYK||x||x||x|
|MultiColor (up to 15 channels)||x|
|DeviceLink profile creation from ICC profiles|
|RGB & Gray||x||x||x|
|MultiColor (CMYK + up to 3 channels)||x|
|Reprofiler DeviceLinks (RGB/CMYK)||x||x||x|
|Reprofiler Multicolor DeviceLinks||x|
|Printer profile creation|
|Gray, RGB, CMYK with presets||x||x||x||x||x|
|RGB & Gray||x||x||x||x|
|CMY & CMYK||x||x||x||x|
|MultiColor (CMYK + up to 3 extra channels)||x|
|Reprofiler profiles (RGB/CMYK) with presets||x||x||x||x||x|
|Reprofiler profiles (RGB/CMYK)||x||x||x||x|
|Reprofiler Multicolor profiles||x|
|Profile-Report as PDF||x||x||x||x||x|
|Profile-Report as XML||x||x||x|
|Print reprofiling with presets only + Reprofiler with presets only + ProfileManager||Printer profiling + Reprofiler + ProfileManager + ColorAnt M||Printer profiling + ProfileManager + XML report + ColorAnt M + DeviceLink + Editing + Reprofiler DeviceLink||Same features as L package + SaveInk||Same features as XL package + Multicolor + ColorAnt L|
One of the most difficult decisions in setting up a DeviceLink profile is to decide which rendering options to choose from the large list of options in CoPrA for a given task. Therefore we have implemented a new Mode drop-down menu (in the Rendering section of the DeviceLink module) that allows you to select between three typical use cases and a Custom mode.
Note: The automatic works best if the target color space has a larger or similar gamut as the source profile.
The profiling settings - also called presets - are a great starting point for Printer and DeviceLink profiling. This is most noticeable in the updated DeviceLink module where we have included the new automatic rendering feature. In addition, we have added presets, e.g. for Multicolor-to-Multicolor DeviceLinks, and for printer and DeviceLink profiling with white ink.
In earlier versions of CoPrA we had already a Minimum Compression rendering method which has now been renamed to Minimum Compression (Paper Absolute). As the name suggests it minimally adjusts the white and black points only while the rest of the color space is treated more like an absolute colorimetric rendering. What was missing was a similar rendering method that works close to relative colorimetric - voilà the new Minimum Compression (Paper Relative).
Side note: We have removed the Dynamic Compression rendering method which was available for DeviceLink profiling only. It did not provide much of a difference to the other rendering methods Blackpoint Compensation or Standard Compression and therefore was regarded as obsolete.
Earlier versions of CoPrA already provided the option to Merge the advanced ColorLogic rendering methods, e.g. Standard Compression merged with Absolute Compression. However, until now it was not possible to merge the four standard ICC rendering methods or a ColorLogic rendering method with one of the four standard ICC rendering methods. This is now possible, giving the user more flexibility for color rendering with DeviceLinks.
Note: Merging is recommended among Relative Colorimetric, Absolute Colorimetric, Blackpoint Compensation and any ColorLogic rendering intent. However, merging between Perceptual rendering and other rendering intents is not recommended for 3rd party profiles.
With a right-click on the respective Load button or the small down arrow button of the profile chooser in the individual modules of the application, you can select the most recently added data (measurement data, created ICC profiles, images, etc.) so that you can easily re-select these data without having to search for them in various subfolders. This makes it easier to set up CoPrA, for example, if you have created a printer profile and immediately wanted to use this profile as a source or target profile in the DeviceLink module. This productivity feature will be extended to all ColorLogic applications so that data exchange will work across all the applications.
Note: While holding the CMD key and clicking an entry in the Recent Files list, the file and its position on your computer will be highlighted in a pop-up folder.
Similar to ZePrA (Troubleshooting) a notification handler has been added in CoPrA that allows multiple messages to be displayed. This avoids notifications from overlapping each other and moves out of sight. If more than one notification or warning is available, this is shown in the icons with the number of warnings. When clicking on the icon or the warning text, all warnings are shown.
Typically, users of CMYK-to-CMYK DeviceLinks apply the Black Generation feature Preserve separation in combination with Exceptions. This allows you to retain pure colors and the separation characteristics of the source. In order to provide a similar functionality for Multicolor-to-Multicolor DeviceLinks, we introduced a Multicolor Mode called Preserve Color Properties already in CoPrA 4.
However, this mode had the limitation that the source and target color spaces must have the same amount of channels and the same channel names. So far, this mode did not work if the number of channels in the source and target profiles was different, for example for 6 to 7 color DeviceLinks, or for channels that differed in hue or name. This has now changed fundamentally with CoPrA 7 as all types of Multicolor-to-Multicolor combinations can be combined while preserving the color characteristics. This enables users to ensure that, for example, their Orange channel stays Orange or Orange with Magenta combinations are retained. CoPrA will automatically map channels that are similar in hue even if the channel names or the channel order differ between source and target profiles. If single channels do not match between source and target profiles but other channels are, such as Blue and Violett when combining a CMYKOB with a CMYKOGV profile, the Orange channel will be retained but the Blue will be recalculated using Violet and using a mixture of the other primaries to match the Blue original colors.
Note: You will find a new preset under Settings called Print to Print - Preserve Color Properties that selects the appropriate Multicolor Mode and all other settings for you.
The Profile Manager introduces several new features.
For color managed color prints on black substrates, such as textiles, white ink must be used first and colors must be applied on top of the white ink to obtain colorful graphics. If white inks are used for the separation, it would be beneficial to also use the back substrate for the black separation. However, profiling with white ink on black substrates was not available in CoPrA so far. Now, we introduce support for printing with White and 3 or 4 primary colors such as CMY or CMYK or any other primaries with or without Black. Our technology uses White ink for the separation. To create profiles with White, special test charts are required, which can be found in the test charts subfolder Special for the two cases CMY+White_on_Black and CMYK+White_on_Black.
The Viewing Condition can be changed by the user in the General tab of the Printer Profiling module. The default setting for ICC profiles is D50 and 2 degrees standard observer. However, in some industries such as textile printing the viewing condition is D65 and 10 degrees standard observer. With CoPrA 7 users can change the Observer to 10 Degrees if required, provided that spectral data has been loaded for the measured test chart.
For 3 color combinations such as CMY and even for 2 color combinations, there is a need to control TAC independently for color concerns such as ink bleeding on difficult materials. An automatic TAC control of a 3C profile will usually result in a higher ink load than some materials can tolerate, and 3C printing is likely to be employed in industrial printing processes such as textile, ceramics and others, where TAC must be kept low—often under 200%. Therefore, in CoPrA 7 we now introduced the ability to control the TAC for printer and DeviceLink profiles with 3 and 2 color channels.
Another improvement for 2 and 3 color DeviceLink profiles is that we can exclude channels now, too.
The Iteration DeviceLink module is a great feature to get the best possible match for proofing. Proofing uses absolute colorimetric rendering without color exceptions. However, in digital production printing, perceptual rendering methods and color exceptions are used to keep colors pure. Nevertheless, there might be an interest to optimize the colors by iteration measurements.
It is not always recommended to do so, especially as out-of-gamut colors cannot be optimized. In CoPrA 7 it is now possible to iterate data for production printing while retaining exceptions during iteration. It recognizes exceptions and rendering settings from the selected reference DeviceLink profile and retains them but only if the selected DeviceLink is a ColorLogic profile. A checkbox will be shown in the dialog making the user aware that there are exceptions used. By default, the checkbox is enabled but the user may disable it.
Furthermore, the layout of the iteration window now corresponds to that of the other CoPrA profiling modules. For example, the Back and Next buttons and a dedicated Save dialog have been added. Next takes the user now to the typical Save dialog where the profile Name, Size, embedding of source and target profiles and the creation of a profile report can be specified.
The Default Template for the profile naming uses an option that adds the number of iterations to each iterated DeviceLink. It is recommended to use the Auto Size option because size matters for iteration. The automation will make sure to always use the highest precision when creating the iterated DeviceLink.
Several improvements have been made in the Image Conversion dialog:
Users of the SaveInk module who also have a Multicolor license will benefit from the extension of the SaveInk module to create SaveInk DeviceLink profiles based on Multicolor profiles. Previous versions of CoPrA allowed only the creation of CMYK SaveInk profiles.
Note: ZePrA 7 supports SaveInk Multicolor DeviceLinks. Besides ZePrA, not many workflow tools are capable of processing a 7CLR-2-7CLR DeviceLink, for example.
For Multicolor profiles to be used as SaveInk profiles, a black channel must be present and it must be the fourth channel. Profiles that do not follow those rules can not be selected.
Note: For Multicolor profiles the exceptions to preserve skin tones and custom exceptions are not available.
A new Iteration tool has been added to DeviceLink profiling. It allows to improve an existing DeviceLink profile based on a printed and measured test chart and requires a DeviceLink license. Even DeviceLinks with Multicolor color spaces can be optimized (additionally requires a Multicolor license).
An existing CoPrA DeviceLink profile can be optimized based on measured color values by using a test chart of your choice (can be created with ColorAnt/Custom Chart). The test chart needs to be converted using the original DeviceLink profile and printed on the target printer. The measured color values are then used to improve the conversion in order to achieve lower color differences and a more accurate reproduction of the source color space. Iteration is therefore particularly useful in proofing situations with absolute or relative colorimetric rendering intents. Perceptive rendering intents can also be used as a special feature of DeviceLink iteration in CoPrA. The iteration calculates a new DeviceLink profile based on the original DeviceLink profile and the measured values. The new profile can be reinserted for iteration until the desired result is achieved.
Use the DeviceLink Iteration as follows:
The goal of the Image Conversion tool is to convert pixel based files for profile evaluations, e.g. while evaluating a demo version of CoPrA or to figure out which profile settings provide the best color rendering. This has been improved and extended. The entire dialog has been revamped to enlarge the preview of the loaded image shown on the right side of the dialog. In addition more options for converting to Lab are added and conversions can be saved in piled layers in one file to better check different color conversions in Photoshop.
On the left of the dialog there are three sections
In the first section you can load the image file to be converted. An embedded profile will be shown below the path to the image. Beside the path to the image a small icon represents the color space of the image.
Note that the Image Conversion tool does not support retaining Photoshop layers or transparencies. Nonetheless image files such as Photoshop PSD and TIFF files with layers or transparencies will be correctly converted, however, only the compatibility layer will be color converted while additional layers and transparencies are removed.
The second section allows to load source and target ICC or DeviceLink profiles. If a target profile is available it can be embedded in the converted file. This is true for DeviceLink profiles and the linked target profile used in that DeviceLink, too. The Convert to Lab option is useful to compare images with different target color spaces or to evaluate the color appearance of color conversions with Multicolor profiles. The latter is a nice addition to the Image Conversion tool as Photoshop does not allow to preview Multicolor images correctly and does not allow to apply conversion from Multicolor to Lab. In case the Convert to Lab checkbox is enabled an additional checkbox to enable Paper White Simulation can be enabled, too. If that checkbox is enabled the conversion to Lab uses the absolute colorimetric rendering intent, if disabled it is using the relative colorimetric rendering intent.
The third section contains a Mode switch. Your can either save the converted image using the Save Image mode, or, when switching to Use Layer, you can add a layer with the converted image in PSD file format. After a first conversion the same original image can be converted again with different profiles, and again, the resulting file can be placed as a layer on top of the previously converted image. With such a PSD file you can switch between the layers in Photoshop to evaluate the quality of the conversions. The layers names contain the profiles that have been used for better identification.
When printing with gamut extending process colors such as CMYK+Orange+Green+Violet/Blue in traditional AM screening, the process colors Violet or Blue are often put on the same screening angle as Black. This can result in so called Dot-on-Dot issues leading to color and lightness variances. However, avoiding Black and Violet/Blue color combinations in separations would reduce the available gamut considerably and would also prevent dark bluish spot colors from being reproduced faithfully. Therefore when the Avoid Dot-on-Dot feature is enabled the separation will use more of the CMY colors instead of Black when combining with Violet/Blue.
The Avoid Dot-on-Dot feature is available in the Printer Profiling and DeviceLink Profiling modules.
Note that other color combinations using the same AM screening angles such as Cyan and Orange or Magenta and Green will not be touched by this feature because those combinations are rarely used in separations anyway.
Ink limiting during linearization is necessary if ink channels are saturated and do not provide sufficient differentiation between the individual color values at higher ink densities. This is typically done by printing a step wedge and then visually determining the percentage up to which a good differentiation exists. The ink channel is then limited at this value. We have added an automatic channel limit function that does exactly this based on the saturation values of the measurements. This function has been added to the two Calculation Modes ColorLogic Default and Linearization according to ISO20654.
Note: For the G7 mode the channel limit function has not been made available as this would contradict the G7 linearization methodology. Ink limiting should be done before applying G7.
The final window of the Linearization module provides two new checkboxes to save the linearization curves either as Photoshop ACV files or as XML files according to the format definitions in ISO 18620:2016. Files, saved in the Adobe Photoshop Curve format (ACV) by CoPrA can be imported in Photoshop and applied to images. This way linearization curves calculated by CoPrA, such as G7 or ISO 20654 (SCTV) curves, can be used in Photoshop, too.
ISO 18620:2016 specifies a simple extensible XML format for the exchange of tone adjustment curves between applications including but not limited to color management, calibration and raster image processor systems. Some RIPs such as Esko Colorpilot support this format which allows to import and use the high quality curves generated by CoPrA.
The curves are saved with the same name as the ICC profile in the User/Documents/CoPrA/Linearization folder.
The Size chooser has two options small and large which affect the number of data points saved in the ACV and XML formats. Small creates 11 points for ACV and XML while large creates the full flavoured 51 points for XML and 16 for ACV. The size does not affect the ICC DeviceLink profile created because it will always use the highest precision.
In addition, in Profile Manager there are new options added to the context menu to create ACV or XML curves from existing Linearization DeviceLink profiles.
A new Templates option has been added in addition to the Profile Name section. When clicking, the Automatically generate file names window opens. Here you can select and combine name components that are specific to each profile module from a list of options and save them as a custom template. The last selected template is used for all new profiles created, so that the naming of profiles can be automated.
Available naming options are date, date and time, measurement data file name, source and target profiles, name of the current preset and others. The option selected in the drop-down menu can be added at a user-defined position (the position is chosen with the mouse pointer) in the Template. The Example section below shows how the name will actually look like. Beside the naming options user defined text can be added at any position in the Template section.
The new Protected Mode available under Preferences allows to lock and protect all custom settings. If activated – with or without a password – changing a selected profiling Setting is denied. This feature proves to be practical if multiple operators in an organization are creating profiles and only a defined set of settings should be used instead of every operator using his own settings. Once the protected mode is activated options in the Preferences are disabled and importing and exporting of settings is denied.
If you need stricter permissions, the Protected Mode can be used with a password. Enter a secure password and confirm by entering it a second time. If a password has been set, it must be entered each time the protected mode is to be deactivated. To remove or change the password, click Reset Password.
CoPrA 5 is a major upgrade. The range of DeviceLink functionalities has been extended with a new Linearization tool, which is included in CoPrA 5 L and higher. New features in Printer and DeviceLink Profiling expanded the black generation and transformed it into the new Color Generation, offering convenient new options like an easy way to select or exclude individual channels for the separation or the visualization of gamut changes in real time. The new algorithm of the SaveInk module now allows even greater ink savings. Overall users will experience a faster startup of the application and users can get all this at competitive package prices.
DeviceLink Linearization optimizes the tone values of primary gradation ramps for any printer and color combination. The goal of Linearization is for adequate differences from white to 100% of primary inks, smoothing of gradation curves and adjustment of primary colors to a defined, reproducible condition.
CoPrA includes the most advanced colorimetric technologies that are not readily available at the RIP level. ColorLogic’s Default calibration method and ISO 20654 (also known as Spot Color Tone Value, SCTV) are supported for Multicolor printing. CoPrA 5’s Linearization also features G7 calibration and the Protect Lights slider for Flexo printing and calibrating on difficult media and printers.
Calculation Modes can be used for CMYK and Multicolor printing with additional options for G7 for CMYK channels of Multicolor printer and ISO 20654 (SCTV) for spot colors.
Print primary ramps on an uncalibrated printer without any color management. There are two ways to get the necessary measurement data for the creation of a Linearization DeviceLink profile:
Measure the test chart and optimize the measurement data using software, such as ColorLogic’s ColorAnt and open the measurement data in CoPrA; or measure data by using CoPrA’s Measure Tool.
Settings can be customized and the curves can be checked directly before creating a DeviceLink. This DeviceLink profile can be used in any workflow for any type of printing process. For example, when printing a profiling test chart on an uncalibrated printer.
ColorLogic ZePrA supports the use of Linearization DeviceLinks as gradation curves. By using this method, linearization can be applied in the workflow like corrections curves in a RIP. When applying corrections in the RIP other curves must be disabled to avoid double corrections.
A new feature in the Printer and the DeviceLink module allows adjustment of the Gray Balance. Users can choose between a cooler and warmer gray balance. This is a nice feature when visual adjustments based on personal color preferences are desired even though perfect colorimetric profiles exist. The effects of changed slider settings are shown in the program in the adjacent graphic.
Note: The Gray Balance setting works independently from the Perceptual Rendering making it a perfect fine tuning tool for any chosen ColorLogic rendering. It will only be used for the perceptual rendering of a printer profile. However for DeviceLink profiling it can be used for any rendering including the four standard ICC rendering intents.
This new expert feature allows packaging professionals to define the channels (including Multicolor channels) of a printer or DeviceLink profile to be used when separating data. For example, if a brown chocolate artwork is intended to be printed in CMYK without using any Cyan in the separation, a CMYK printer profile can be created which only uses MYK. These types of profiles avoid unwanted Cyan dots in the separation and the converted artwork would appear visually close to a conversion with a complete CMYK profile. The new feature can be found in the Color Generation tab of the Printer and DeviceLink profiling modules. This function is particularly intelligent for Multicolor profiles as it searches for replacement colors in the Multicolor channels when excluding a channel (e.g. Cyan) which can compensate for the missing channel in the gray balance. The alternatively calculated Multicolor channels are displayed grayed out in the panel Black Point and TAC.
The Printer Profiling module includes a new feature to visualize the effects of the selected color separation and Black Point settings. The Gamut view available in the tab Color Generation visualizes changes of the gamut shape immediately when altering settings and provides a real time preview of the profile gamut to be expected. The user can immediately see how changes in the settings affect the gamut, for example, how a reduction of the Black Width slider or a very late Black Start reduces the ability of a profile to render dark colors. The Gamut Volume is calculated and displayed in Lab volume units allowing the user to easily find the settings that produce the largest gamut (highest number).
The Black Point and TAC of a profile are important settings as they define the maximum contrast and depth a profile is able to produce when separating data. We have changed the graphical display of the black point and added number fields for each channel with a colored icon in front of each number field. Editing will be faster, especially if non-standard color combinations are used in Multicolor printing with non-CMYK inks. The colored icons are a guide to the channels used to build the Black TAC. Depending on the selected Black Calculation setting the number fields are either disabled or enabled.Selecting Auto automatically uses all channels to calculate the black point and therefore individual editing of channels is disabled. The Auto mode will not use any Multicolor channels beside CMYK or in general the first four channels for the Black TAC.The mode Balance CMY allows editing of the black channel (or in general the fourth channel) and additional Multicolor channels. Entered Multicolor color values are fixed – like the Max.Black value – and CMY values will be calculated accordingly.
The mode Custom allows editing of all channels.
Note: For Multicolor profiles with more than four channels you can use the extra Multicolor channels for the black generation besides the first four channels (typically CMYK). However, the total area coverage (TAC) cannot exceed 400%. Values for the Multicolor channels can be entered manually when using the settings Balance CMY or Auto and these values will then be used to calculate the Black TAC. Usually it is not necessary to use those channels but sometimes a dark Multicolor channel adds desired contrast and definition. This can easily be checked by viewing the Lab values below the Custom fields. If the addition of a certain Multicolor channel decreases L* while a*b* values are not significantly altered, using this channel can be considered. However, the gray balance will use additional channels as well.
The user interface of the SaveInk module has been streamlined and the save ink Methods have been simplified. Now there are only two methods – Easy and Advanced. The Easy method reduces the settings a user needs to define to a minimum but still achieves economical high quality profiles. Only three settings have to be adjusted in the Easy method: the Total Amount of Color, the Ink Saving slider and the exception Preserve 0% Black.
In the Advanced method all settings are enabled making this the preferred method for advanced users. It introduces a new dE-Tolerance slider which allows tremendous ink savings when set to a high tolerance. dE-Tolerance increases the maximum deltaE between the original profile and the SaveInk DeviceLink profile which results in greater ink savings. In contrast, the predefined Settings SaveNeutral, SaveStrong and Maximum use a low tolerance setting of 0.5 deltaE ensuring a very high color and visual accuracy of the profile. However if greater ink savings are desired it can only be done by reducing the visual accuracy, hence a higher dE-Tolerance setting is required. The new Extreme ink saving preset uses a high dE-tolerance.
Note: Users can save on ink even more by using a higher dE-tolerance setting. We recommend to test ink saving profiles with high tolerance settings closely before using them in production.
Everybody working with lots of ICC profiles on their system knows how hard it can get to find a specific ICC profile in a crowded drop down menu. In CoPrA 5, all profile drop down menus now function as a search field. Simply type in some letters of the desired profile and only those profiles containing these letters will be shown in the drop down menu. This is a feature power users will love. ESC deletes entries on the Mac and the previously selected profile reappears in the list. Under Windows it is sufficient to click elsewhere to delete entries.
The principle of ColorLogic’s Multicolor profiling works as follows:
The standard Multicolor case
If a standard Multicolor color space with CMYK parts is used, the additional inks Green, Orange and Violet extend the gamut in each section of the three primary colors. In between each section of the primary colors one gamut extending color is used making it a color space with 7 colors.
The advanced case
Some new inkjet printers use a Red and an Orange ink in addition to the standard CMYK inks. CoPrA is able to profile such a 6 color printer since Orange and Red are two gamut extending colors of the main primary color section Yellow and Magenta.
Note: Special test charts must be used when working with two gamut extending colors. Currently ColorAnt isn’t able to create such test charts. We have added new Multicolor test charts for those advanced cases which use two additional channels. The test charts are available via the Tools menu (Open Testcharts folder > Testcharts > Multicolor).
The Printer Profiling and DeviceLink modules have an extended Rendering option to change the overall Chroma, Lightness or Saturation of the profile with a slider. The Chroma option was available in former versions but the new Saturation option is even more favorable in situations where a more saturated color outcome is required. As with the Chroma option, the gray balance is not effected from the slider setting. It is recommended to use the Saturation option for large color spaces such as gamut extending Multicolor in order to let colors pop up more.
Note: The effect of each of the options is visualized in the gamut graph on the right side. As Saturation is calculated with chroma versus lightness, more saturation will darken colors slightly and thus will make them appear more vibrant. More Chroma will lead to high chroma colors being out-of-gamut and thus not will not be able to be rendered with the given profile.
An additional Rendering option has been added to the DeviceLink module. The new option Minimum White Compression is similar to the Minimum Compression. Both rendering options compress the white point so that no paper simulation appears. Additional differences are listed below.
Minimum Compression: is rather a perceptual rendering that additionally compresses the black point so maximum dynamic range is utilized without loss of detail in the shadow area (vs Minimum White Compression).
Minimum White Compression: Compresses the white point but not the black point, so a close match between source and target color spaces can be achieved. This can be beneficial for cross media color appearance, color matching or printing on slightly different media. It can be regarded as close to absolute colorimetric rendering.
Reprofiling is a term we have introduced in our product DocBees-Repofiler to describe an innovative profiling approach that does not require to print a large test chart and to define each and every profile settings from scratch. Instead the reprofiling approach uses only little information (measurements from a small color wedge) and an existing profile to update that given profile. The goal is the creation of an updated profile for changed printing conditions in an easy and fast way.
Based on the updated profile it is possible to build a Correction DeviceLink profile with special settings which allows to take the deviations into account to be able to re-print colors as close as possible the same way as before the deviations. This is a very helpful feature in order to minimize color appearance changes in the print run during production despite print changes. To a certain extend even paper color and bigger ink changes can be compensated for.
The reprofiling technology is now include as an additional printer profile module called Update Profile in CoPrA 4. There are a nice improvements associated with this move:
The Update Profile functionality will optimize and maintain the quality of your daily print production with updated printer profiles. But you might have a bunch of DeviceLinks using your original profile already that would need to be rebuild with the updated profile. This could be a time consuming work. The new module Recalculate that is located in the DeviceLink section will make this fast and easy. You simply tell the software to rebuild all existing DeviceLinks using a certain profile with your updated profile. CoPrA will then lists all those DeviceLinks and you can decide which of them shall be rebuild and if you want to keep the original or overwrite it or if you want to rename something. After that you simply click to build the profiles and all of them will be calculated automatically using the same settings of the original DeviceLinks.
Under Black Point and TAC you can define the overall Total Area Coverage (TAC) and the TAC for the black point (Black TAC). The Black TAC is the darkest color in the profile which in most cases is identical to the overall TAC.
Modern printing systems allow printing of a dark black point by using a low amount of ink. Sometimes only pure black is required to print the darkest black which means 100% black is already sufficient enough. Obviously such a low TAC will not work for other color areas – an example would be a pure red with this TAC.
Therefore we separated the Black TAC from the general TAC in the Printer and DeviceLink Profiling. This allows the best black point calculation without any unwanted influence on the overall color space.
In addition to the calculated Lab value, CoPrA 3.3 and higher also shows the percentage value of the generated Black TAC (red frame in the screenshots below). The sliders don’t adjust the calculated values as in previous versions of CoPrA – which enables you to maintain the predefined values.
Note: Separate TAC and black point settings may be required in certain new generation printing equipment including large format and digital printing systems to ensure proper gray balance with high contrast, while maintaing highly saturated colors.
The options for the Black Calculation are explained in this article.
The following example of a digital printer shows the advantage of the two different TAC settings. By utilizing the optionsAutomatic or Neutral CMY for Black Calculation and would start from a Black TAC of 400%, CoPrA will calculate the most likely best black point TAC. The calculated black TAC will be displayed like in the screen shot below. In this example aBlack TAC and the general TAC of 275% will be calculated. The black point is very neutral (a* and b* are both set to 0) but the L* is only set to 16.6 which might be a bit too light.
Reducing the Black TAC to the for digital printing systems typical use of pure black as the darkest printing color, the Black TAC will be set to 100% and the black point has a L* value of 11.9 – so much darker. Therefore a much better contrast can be reached with this setting than with a Black TAC of 275%. Setting in a general TAC to 300%, also enable printing of highly saturated colors. Without these two separate settings it is not possible to won’t be able to achieve quality results.
ColorLogic CoPrA 3.3 and ColorAnt 3.01 include a feature to streamline administrating and loading license files for multiple users on the same computer.
Satinskin Textiles is a digital textile printing company located in Portugal, exporting 90% of their production. They use CoPrA and ColorAnt applications in their workflow.
Antero Pedras of Satinskin Textiles is responsible for the in-house software development that goes from the production system over the ERP to their RIP software. He explains his experience with ColorLogic: "We work with several machines from various manufacturers and it seems that CoPrA and ColorAnt fit well into our current workflow, providing outstanding results. Prior to using ColorLogic, we had an issue with the color blue appearing more purple in profiles and the gray balance not being very accurate. The gray balance feature in CoPrA is great, giving us complete control to where we want our grays to go, color wise. In addition, our previous solution did not provide multichannel devicelinks, and having this ability to convert with CoPrA multicolor profiles provides better efficiency all around."
Overall, Antero Pedras is very happy with how simple the applications are to use, while still providing the best possible results. "ColorLogic solutions really provide a high return on investment, because in the end the user needs less testing and saves ink", says Antero Pedras.
To satisfy the ever changing requirements of the printing industry you need flexible and yet still specialized solutions to address those needs in the best possible way. We spoke with Mr. Alberto Gómez, CEO of the printing company Impresiones y Prototipos, s.l. in Barcelona, Spain, who is mainly responsible for the strategic development of the whole company. He focuses on quality improvements, solutions to fulfill specific customer requirements while looking for new opportunities to expand the activities of his company.
Our company Impresiones y Prototipos, s.l., is a printing company located in Barcelona (Spain) with over 30 years experience in the printing industry. Three years ago we created a new division “Zeta Prototypes” which specializes in prototype packaging. Our main clients here are located in the high-end sector of perfumery. Due to the high quality of our prototypes and the great success we have achieved here in Spain, we just started our international expansion prototypes packaging division. Our goal for 2015 is to establish this international business.
We use CoPrA and ColorAnt to optimize our measurement data and create ICC and DeviceLink profiles. Afterwards we process files by using the color server ZePrA. After we validated how this powerful color management engine helped us to improve our print data, we also have included the ZePrA module for Spot Color conversion, which is very important for us. We also just started using the Reprofiler, which we think is a very interesting solution for handling slight changes in the print process without the need to regularly create completely new profiles.
A while ago we had some color issues in our production. I was looking for better ways to achieve color fidelity and shorter make-ready times. Someone recommended Daniel López from ID-Soft to us. He helped us to evaluate the right solutions and then integrated the ColorLogic products for us. Daniel is an excellent color consultant. He is very knowledgable and probably one of the best technicians for colorimetry in Spain. He also introduced us to the ColorLogic products.
We tried many other color management solutions, but we were never able to achieve our goal with them. Our goals are to create high-quality prototypes and ensure the same colors in the final print. It is also important to know that theses prototypes serve as samples for all further printing processes. With the ColorLogic solutions, we saw from the beginning that we could achieve this goal, because they are very powerful and versatile. Before we changed our production, we had to perform many tests to get a color fidelity prototype. Since we began using ColorLogic technology these tests have been drastically reduced while also giving us a substantial increase in production without comprising the print quality. Additionally, due to ColorLogic’s products we can manage color in all material we work with: Polyester, Folding, Leather, PVC, PET, etc, knowing that we will always obtain the best result of reproduction.
Each prototype we do is a unique work. Our customers rely on our quality and with our optimized production we have have been able to achieve for our prototyping a 95% realism in comparison to the final industrial production. Today we are the 1st company in Spain which is certified by the best companies. So, now that we have such an extensive experience in conducting professional prototypes, we begin our international expansion by offering prototyping to other countries.
It is not a cheap solution, but I think it is complex to define what is cheap or expensive… Of course, it depends heavily on the objectives that are achieved. In our case, although it looked like a major investment in the beginning, we believe this was worth the money spent. Meanwhile we improved production tremendously and added value based on the professional knowledge of Daniel López. And if we ever see new requirements we can always discuss those with him. So for sure, I would do the investment again.
The latest version 4 of the high-performance color server ZePrA, developed by the German ColorLogic GmbH, has successfully passed its test period at alprinta GmbH. For some time now, alprinta GmbH has used Colorlogic‘s products ZePrA, CoPrA, Reprofiler and ColorAnt for their daily color management tasks. Ever changing print conditions in digital and screen printing, along with the special needs regarding exact reproduction of spot colors, calls for high-end color management solutions as one of the key success factors for alprinta.
“I really like to test new products for our production. The printing industry is changing constantly and only by adopting your production process to these changing requirements, allows you to maintain and optimize it. I also appreciate the quick response of the development teams responsible for the products we use here at alprinta. In addition, it enables me to share feedback and ideas regarding future development which may benefit all users.“
Lukat explains how the ZePrA color server is used at alprintas‘ production in combination with ColorLogics‘ CoPrA (ICC profiling): “Instead of repeating the general advantages of the ColorLogic products, I like to focus on new features in ZePrA 4 / CoPrA 3 which are so beneficial for our daily print business:”
Until now the standard process was to generate printer and DeviceLink profile with CoPrA and re-profile with Reprofiler, each combination of printer, material and printing speed. The resulting DeviceLink profiles, were used for color conversion in ZePrA. Dealing with ten different print materials, three printers with three different speed settings ends easily in handling of 180 profiles (90 ICC and 90 DeviceLink profiles). The printing results are outstanding, but whenever something changes: material, settings, etc. all profiles need to be redone to maintain the quality. With the new SmartLink module in ZePrA 4 it is now possible to share DeviceLink settings between CoPrA 3 and ZePrA 4 and cuts with one “click“ the amount of profiles in half. ZePrA calculates automatically the required DeviceLink profile based on the related output profile. There are also pre-defined settings available for SmartLink.
This new feature is one of my favorites. Especially in large format printing with its different kind of materials and reproduction capabilities. All clients require perfect reproduction of their CI colors and spot colors. Therefore, it is essential to know if those colors may be reproduced with the chosen settings. With ZePrA it is possible to define a variable for DeltaE2000 (deltaE2000 fits nicely to human color prediction) to track if the color shift is good enough to continue with the print or not. This goes very well together with the new rendering intent Minimal Compression in CoPrA 3 which allows the best possible nearly absolute colorimetric reproduction. Who can ask for more!
With the new Flattening options it is possible to reduce transparencies quickly either on single jobs or whole plates and ensure the best possible reproduction without running into problems with transparencies or spot colors. Daily print production has proven that reduction of transparency is required. Even working in a PDF-X/4-Workflow can lead to those unpredictable problem which can be solved now.
All job settings may be stored manually in ZePrA by using the report function – in ZePrA 4 it is now possible to do this automatically and store it in a folder. I believe that this is essential to guarantee future reproduction and archive customer data. Thank you, ColorLogic, for realizing this customer request!
Finally, the most important point for all decision makers: Even if all topics mentioned are already more than helpful in daily reproduction work, you will enjoy the SaveInk module in ZePrA 4 and CoPrA 3 on top of it. I was able to realize approximately 20% ink reduction in 1000 print job without any loss of quality. Especially in large format printing where ink costs define the print costs – this could make the difference. This function pays off from your first print job on. Additionally, with the different SaveInk levels you are able to define quality and rentability.
The German alprinta GmbH located in Leverkusen has been successfully working in print and display production for more than 30 years. Their core competence lies in digital and screen printing as well as advertisement, displays and UV offset. Alprinta is one of the market leaders in the area of display advertisement. This success is based on over 50 motivated and highly experienced employees.
“My sincerest thanks to ColorLogic for the new ColorAnt tool for measurement data preparation!” writes Ulf Wittenberg from Appel Grafik, who as a long-standing customer was involved in the beta testing of CoPrA 2 and ColorAnt in 2011. The report from Ulf Wittenberg at Appel Grafik on his experiences shows why…
Appel Grafik is a media service company based in Germany with sites in Berlin, Düsseldorf, Frankfurt, Hamburg, Munich and Stuttgart. The Appel Grafik sites have been using the DeviceLink profiles created by ColorLogic CoPrA for many years for high quality and standardized color conversion of PDF files and pixel images. Ulf Wittenberg, Color Manager at Appel Color department creates, tests and optimizes the DeviceLink and ICC profiles centrally for the Appel Group, enabling him to ensure consistent color quality throughout the company.
Ulf Wittenberg continues:
“At last with ColorAnt there is software for MacOS and Windows for applying corrections such as measurements smoothing or compensation of optical brighteners to the measurement data – and as a CoPrA 2 purchaser it is free of charge, too. ColorLogic has also integrated even more extremely useful functions with the help of its outstanding and highly customer-oriented team.
The measurement data correction and smoothing are extremely helpful in our everyday work, particularly in calculating output profiles for color laser printers that despite careful calibration often still have notable irregularities. In addition, papers with a significant amount of optical brighteners are often used in production that in turn generate problems of a different kind when their effects cannot be corrected. Using ColorAnt, the necessary corrections can be included in the measurement data and their effect checked in advance of the profile calculation. The corrected data are then reflected in the CoPrA profile as well.
The other tools in ColorAnt are also fantastic – some outstanding examples include:
The whole package is rounded off by a comparative function with statistical evaluation and a PDF report. This provides a really comprehensive overview of the quality of the printers measured.
This combination of advanced color management tools was previously only possible using several different programs from various manufacturers – to have all this in just one program that is really easy to use makes us really happy!
In summary: ColorAnt easily exceeds our expectations and feature requests and has become an indispensable tool in our workflow.”
The German SKN printing and publishing group has a long tradition which dates back to the last century. SKN currently employs approximately 450 employees. The publishing area covers over 30 different telephone books, the monthly magazine “Ostfriesland Magazine” and also publishes books. With its daily newspapers “Ostfriesischer Kurier”, the “Norderneyer Badezeitung” and two additional weekly newspapers, the SKN is also well known in the German newspaper publishing.
Beside these activities, the SKN is one of the largest industrial printers for high volume printing in Germany. According to their motto, “SKN – Competence in printing and publishing“, the SKN delivers high quality on a good price-quality-level. Besides highly educated and motivated employees, it‘s essential for the development of such multifaceted company to use the right technology and to have a close contact to all clients. Therefore, it is very important for the SKN to take special care about job printing and close customer relation. In other words, to present itself as a competent and reliable partner with whom it is easy to work with.
Tielko de Groot is the Manager of Prepress at SKN and, in addition, responsible for training and internal complaints department. Several years ago, a print consultant introduced him to the products from the color experts ColorLogic. The possibility to handle all print related data in the correct color space convinced Tielko de Groot to ColorLogic was the obvious solution. Due to the importance of using InkSave in SKNs production, they decided to work with ColorLogic ZePrA and the ColorLogic DeviceLink profiles.
Tielko reports: “Working with a reliable and fast color server, which can be configured in an easy and understandable way, is really great. ZePrA is responsible for most of our color conversions and ink saving calculation of print data for sheet-fed and web-fed offset printing. For example, to adjust color data to the different Fogra characteristics of several paper types is an easy and fast task. Furthermore, by using an automation software like Enfocus Switch, the automation process in production can be additionally increased”.
Regarding the DeviceLink profiles, Tielko says: “At first, I like to highlight the fact that the DeviceLinkSet profiles have proven its usability during several print tests with Fogra certified color consultants. That main advantage is that it enables proprietary systems to deliver the same results as ZePrA. Therefore, we are using those profiles especially in newspaper production with Kodak Prinergy to apply SaveInk directly before printing. Before deciding on this production method, we tested a competitive product, which produced several errors. The generated print data were useless for production. However, the ColorLogic products are very reliable and need more or less no support at all. The few questions which have been raised so far, have always been answered fast and sufficient by ColorLogic and Karsten Schwarze from our dealer Impressed.”
Another advantage regarding the correct output in production rests, based on Tielko de Groot statement, in the fact “that the color server can be set to only adopt the images inside the PDF (or image files itself) and does not rip the complete PDF files or creates a complete new one or does any additional modification. This leads to a higher performance, too. And it keeps me independent from any PDF library settings …” He went on to say, “I believe investing into a color server only happens once – and therefore you should better proof that it lasts. With ZePrA return on investment is ensured. By the way – we are also using ZePrA in our subsidiary OPD.”
callas pdfToolbox is capable of doing color conversions using regular ICC profiles, but it can also use DeviceLink profiles.
Using specially crafted DeviceLink profiles from ColorLogic is an affordable way to reduce ink in PDF documents to what is needed for a specific printing purpose.
Did you like the video? Then you might want to have a look at related videos in the following playlist!
This webinar covers several color related topics:
ColorLogic and CrossXColor present our software solutions ColorAnt and CoPrA Software for High End Color Management including:
Using CoPrA you are able to create printer profiles for your presses.
In this tutorial I create a 7 color printer profile (CMYKOGV) for my digital Indigo press. The measurement data is already obtained in ColorAnt, where I measured the printed test charts en modified the measurement data.
The multicolor printer profile "Indigo5600_CMYKOGV_TAC300.icc" is successful created in the ColorLogic shared folder (Users/Shared/ColorLogic).
The profile report from the created printer profile opens automatic in your default PDF reader. The report contains colorants info, profile statistic tests, gamut curves, gamut volume table, gray balance curves, sample images, RGB conversion tests, hue samples, linearity curves and dot gain curves. The report is saved in the CoPrA "Reports" folder (User/Documents/CoPrA/Reports).
When sending problems to support or asking questions about a specific functionality, it is always helpful if you supply as much information as possible:
When such files are over 2MB it is more reliable and quicker to send them to us through our Dropbox. This article describes how to do so.
You will receive an email confirming your files were uploaded succesfully.
Likely :-) ColorLogic offers a very comprehensive color workflow solution and more than likely it overlaps in functionality with some of the other tools in the market that you know. The important thing to remember is that we believe that the ColorLogic solutions have a number of key differentiators and advantages:
Advanced packaging products can re-separate files using a flexible number of spot colors. The answer ColorLogic has for such workflows depends on its unique ability to work with MultiColor DeviceLink profiles in CoPrA and ZePrA. Using Photoshop and the edit module in CoPrA, a customer can create custom spot color orders and build those into a DeviceLink profile that can then be used by ZePrA to separate incoming CMYK files. An upcoming ZePrA version will add a much more advanced spot color conversion module for such workflows as well.
In such environments it will be very important to understand the needs of your customer and their project very well before suggesting a ColorLogic product. In case of doubt simply email firstname.lastname@example.org and we will be happy to help you qualify opportunities.