This unit explains how to turn a PDF file containing a brochure into a print ready PDF that can be output on a digital printing machine or printing press. Several aspects of inspection and optimization are highlighted.
All the black text seems to also show up on the CMY color plates. This is not ideal and causes several problems:
For optimal print results, black text should only occur on the black separation.
The black text is now gone from the Cyan, Magenta and Yellow separations.
All the text is now only showing on the Black separation, increasing the quality of the output for text as well as reducing the cost for color ink on digital printing devices.
Seemingly only one spot color, the Adobe Red, is used here.
Sometimes PDFs contain a special color both as a spot color and as a process color. When processing or printing such PDFs, special colors that are expected to look the same will often look slightly different.
In sheet fed printing, in most cases it will be sufficient to add 1.5 mm of bleed. Some online print portals even limit the amount of bleed to such a small value to optimize sheet usage. For demonstration purposes, we choose 3 mm to show the effect more clearly.
In cases where objects are already relatively close to the trim area, it is preferable to only use smaller bleed values.
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