Real World Print Production with Adobe Creative Suite Applications

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 ...