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The calibration process is fully automatic and can be performed unattended after you have loaded
substrate of the type you wish to calibrate. The process takes about 18 minutes and consists of the
following steps.
1. The Closed-Loop Color Calibration and Ink Restriction Test Chart is printed, which contains scales
of patches of each ink used in your printer.
2. The test chart is scanned and color-measured using the HP Embedded Spectrophotometer. If the
scan cannot be completed successfully, a message is displayed on the front panel; see
Color
calibration fails on page 43.
3. From the measurements made by the spectrophotometer, the printer calculates the necessary
correction tables to apply to your print jobs, for consistent color printing on that substrate type.
Calibration should be done in any of the following circumstances:
●
Whenever a printhead is replaced
●
Whenever a new substrate type is introduced that has not yet been calibrated with the current set
of printheads
●
Whenever you notice excessive color differences between prints. Such color differences can be
caused by aging and wear of the printheads, changes in substrate characteristics between one roll
and another, changing environmental conditions and so on.
Whenever you replace a printhead, an alert will remind you to perform color calibration, unless you have
disabled the alerts. If printhead alignment and/or substrate-advance compensation are also needed,
color calibration should always be the last operation.
You can check the color calibration status of your substrates with the HP Internal Print Server or the
front panel. In the HP Internal Print Server, select Substrate > Color calibration > Show all.
●
Default status indicates that the substrate has never been calibrated. In this case, the factory
default color tables will be applied to print jobs.
●
Done status indicates that a color calibration has been performed successfully on this substrate.
●
Obsolete status indicates that a printhead has been changed since the substrate was last
calibrated, and therefore the substrate should be recalibrated.
ENWW Color calibration 9
Printer calibration