Proofing Terms Defined

• Color key A type of color proof where each of the four colors (cyan, magenta, yellow, and black) are printed on separate sheets of acetate, in preparation for printing the composite image.

• Blue line A type of page proof that only shows layout, not color.

• Color chip A sample of how a particular color prints on a certain type of paper. (Visit to see examples of color chips.)

epic milestones, we all know that we still cannot be truly guaranteed to get on paper what we see onscreen. Yes, proofing on the designer's end is essential—hence the need for rounds of color keys, blue lines, and so forth. Printers are usually highly committed to working through color issues even before ink begins hitting the paper, but what can we do as designers to offer our files to printers as foolproof and print-ready as possible?

Full-color graphics created in Photoshop are typically highly complex and color-rich. Usually, the "punch" of a piece rests on the ability of the graphics and images to tell a story. Therefore, accurate depiction of color is essential.

Setting up your Photoshop files to print as color-correct as possible can sometimes be an intricate process of trial and error. Photoshop 7 now more than ever is tailored to allowing detailed color callouts. Notice the extensive Color palette options shown in Figure 2-1. Knowing what Photoshop offers when it comes to Color palettes allows the designer to use this technology most effectively. For more information, see the section later in this chapter titled "Pick a Color Mode."

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