Calibration; Calibration Overview - Xerox CX PRINT SERVER 550 User Manual

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Calibration overview

Calibration

Obtaining the most satisfactory print quality on your printer
depends on a number of issues. One of the most important issues
is steady toner density. Toner density is affected by many factors
such as heat, humidity, and service settings. Toner density also
tends to vary over time. Such variations cannot be totally
eliminated, but you can perform the calibration process to
compensate for them.
The calibration process consists of creating calibration tables that
are mapped to a specific media type, and screening method.
You can create calibration curves using either of the following
options:
Off-the-glass calibration: Enables you use the scanner platen to
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create calibration tables.
X-Rite i1 spectrophotometer: Enables you to print a color chart,
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scan the streams of color patches in the color chart, and create
a calibration table based on the scanned measurements.
The CX print server uses the data in this table to compensate for
the differences between the actual, measured density level and the
target density level.
You should create calibration tables in the following instances:
Every 24 hours, to compensate for potential variations in toner
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density
When you use a new paper stock
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When prints show "color casts"
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After machine maintenance or hardware changes
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If there are drastic ambient changes (temperature and humidity)
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In the job parameters window, under Color > Calibration, the
Linked option is selected by default. Any job that meets the media
attributes and screening that you selected during the calibration
process will automatically be mapped or linked to that calibration
table. When you send your job to print, the calibration table that is
linked to the selected media type and screening is automatically
used for printing the job.