Xerox P8EX Spire CXP8000 Color Server - User Guide - Page 445

Glossary Output tone curve Overprint PDL PICT Pixels PostScript® Prepress Printer description files Process colors PSImage Quartertone 431 A graph showing the relationship of original input densities and the corresponding dot percentages on film. A technique, which overlaps colored elements to eliminate the appearance of gaps between elements caused by misregistration of the various separations during printing. For example, black text is normally set to overprint. See also Trapping and Misregistration. Printer Description Language files (for example, PostScript, PDF, EPS, VPS, VIPP). The CXP8000 Color Server processes image files in PDL formats, converting them into a suitable Ready-To-Print format for direct, high-quality printing. A Macintosh file format for bitmaps and vector graphics. Contraction of Picture Element. The smallest element of a digital image. A programming and page description language that has become industry standard for electronic publishing. It is used to describe the entire page, including both text graphics and images. PostScript is completely independent of the printing device. Developed by Adobe Systems, Inc.™ Generic term used to describe the processes involved in preparing images for printing. Includes the input, edit and output stages. PPDs (PostScript Printer Definition), and PDFs (Printer Definition Files). These files are used by the Macintosh applications to prepare page and documents for specific output devices. The four ink colors used to reproduce full color images - cyan, magenta, yellow and black. A low-resolution EPS file used in the Creo APR workflow. This file is used for positioning in page layout. Changes made to this file will be applied to the high-resolution file, which automatically replaces it shortly before exposure. See also APR. The tone area of an image influencing highlight detail and with density values between the white point and midtone. Typically, printed with a dot area near 25%. See also Highlights, Midtones, Shadows.