G-5
Glossary
moiré
An undesirable pattern in images made
using halftone screens. Moiré can be
caused by the improper line frequency of
the screens, improper screen angles,
improper alignment of halftone screens,
or by the combination of a halftone
screen with patterns in the image itself.
named color
A color that is defined according to a
custom color system. For example,
PANTONE 107 C is a named color.
office applications
Software applications commonly used
for business purposes, including
presentation applications, spreadsheets,
and word processing programs.
offset lithography
Printing in which ink is transferred from
printing plates to a rubber blanket and
then from the blanket to paper.
output profile
The output profile describes the color
characteristics of a printing device. It
consists of both a profile for your printer
and a calibration target that defines the
expected density response of the printer.
phosphor
Material used in making computer
monitors; phosphors glow and emit red,
green, and blue light when struck by an
electron beam, thus creating an image.
photographic rendering
A color rendering style that preserves
tonal relationships in images.
Unprintable colors are mapped to
printable colors in a way that retains
differences in lightness, sacrificing color
accuracy as necessary.
pixel
The smallest distinct element of a raster
image. The term is a combination of the
words “picture” and “element.”
PostScript
A device-independent page description
language developed by Adobe, which is
used to print and display pictures and
text. PostScript 3 includes many
enhancements to older versions of Post-
Script, including improved image quality
and color with Enhanced Image Tech-
nology, faster performance with
Advanced Page Processing, and ease of
use and setup with NetWorks System.
PPD (PostScript Printer Description
file)
A file containing information about a
particular PostScript print device’s
capabilities and restrictions. The
information in the PPD is presented via
the printer driver.
prepress proof
A print made from a set of film
separations or other file to simulate the
results of printing. A prepress proof is
the last opportunity to catch problems
before the print job goes to press.
