Gamma Corrections - Xante Assel-a-Writer-8300 Instruction Manual

QuarkXPress only allows you to change the line screen of an
individual TIFF file through the Style menu. For version specific
information, see the QuarkXPress documentation.
For additional application information, see appendix B, "Application
Notes and Page Design."

Gamma Corrections

XANTÉ Halftone Calibration Technology includes a sophisticated
gamma corrections feature. This feature allows you to adjust printer
output for ink, media, file, and environmental conditions. For example,
if a scanned image is too dark, you can select a new gamma setting to
lighten and enhance the details. Gamma corrections bring out details
that can be lost when printing at higher line screens or when dark photos
are scanned.
Your printer offers seven standard gamma correction curves, 0 (no
change) through 6 with 3 as the default. Settings 0 through 5
progressively lighten the midrange values. Gamma 6 allows you to
create a negative (reverse) image, (required by some printing
processes) without using a software application. Figure 8.1 illustrates
the effects of the standard gamma correction settings.
You also can create and download up to seven custom gamma curves
to calibrate your printer for specific conditions. Custom Gamma
Curve 0 can be selected as the printer's default gamma correction
curve using the Linear option of the front panel Gamma menu. See
"The Gamma Menu" in chapter 5, "Gamma" in chapter 6, and
"Calibration with a Densitometer" in chapter 3 (Macintosh) or
chapter 4 (PC).
All fourteen gamma correction curves can be selected on a per job
basis through the printer features section of the PPD. The PPD
setting overrides the front panel setting for the specific job.
If you use gamma corrections in combination with XANTÉ's new
enhanced screening technology, you can further fine tune your
output quality. See "Levels of Gray" earlier in this chapter and
"Enhanced Screening," later in this chapter.
8-6 Advanced Features ____________________________________