Xante Accel-a-Writer 3 Series, User Manual

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3-32 Macintosh Setup bb ____________________________________
Calibration with a Densitometer (Gamma)
Densitometer support (3G) allows you to use gamma curves to adjust
your printer’s performance to eliminate inconsistencies due to
equipment age, different toners, press inks, and media, and
environmental conditions.
The XD-1 (XANTÉ Densitometer), combined with XANTÉ Command
Center software, measures grayscale output for calibration and proofing.
This affordable, easy-to-use densitometer will be used in this manual for
example purposes.
Seven standard curves are supplied with XANTÉ’s Halftone
Calibration Technology and you can create up to seven custom
gamma curves. You can select any custom or standard gamma curves
on a job by job basis using the front panel Gamma menu or the Print
dialog box Gamma PPD option. See “Halftone Calibration
Technology (Gamma)” in chapter 6 for details.
Gamma curves are created with XANTÉ Command Center and a
densitometer using the following steps:
• Printing a Calibration Page
• Using the Densitometer
• Linearizing the Densitometer Data
Printing a Calibration Page
To begin calibrating your printer, print a calibration page to measure the
printer’s current performance as a basis for the calibration.
1. Open XANTÉ Command Center and choose Graphics:
Linearization. The Linearization window appears (fig. 3.15).