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Real World Print Production with Adobe Creative Suite Applications by Claudia McCue

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Converting Screen Captures to CMYK

Since screen captures are generated as RGB images, they must be converted to CMYK for print. When performing that conversion, a special approach is recommended to maintain the best rendering of black type. The default conversion of RGB to CMYK in Photoshop will render black as a four-color mix (Figure 4.8), with the possibility that slight misregistration on press will turn tiny details to mush.

Figure 4.8. A conventional conversion from RGB to CMYK produces four-color equivalents of the gray and black parts of a screen capture. Press misregistration will turn text and other black or gray elements to an out-of-focus rainbow. Festive, but hard to read

To simplify printing of screen captures, use a color-separation ...

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