HP Scitex FB550 User Guide - Page 65

Clear All Bad Jets, Default Registration Data, Unfixed Jets Report, Linearization

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4. Press ►. The head selection screen appears. 5. Repeat steps 1 through 4 for any other printhead, or press n to return to the menu. Clear All Bad Jets When you select Clear All Bad Jets, the control panel displays the following prompt: Are you sure you want to clear ALL reported bad jets? ● Press Cancel to cancel this function, or ● Press Proceed. The control panel displays this message: Do you want to clear the hard bad jets? ● Press No to clear the soft bad jets only, or ● Press Yes to clear both the hard and soft jets. The control panel displays this message: All reported bad jets have been cleared. ▲ Press Proceed (►). When you have finished mapping jets, the following summary appears on the control panel: x soft jets currently reported bad. x hard jets currently reported bad. x new soft bad jets reported. x new hard bad jets reported. x previous soft bad jets cleared. x previous hard bad jets cleared. where x is the number of jets. Default Registration Data This option enables you to reset bidi registration, head-to-head registration, or jet mapping data, or any combination of them. After running this option, the deleted calibration values must be reestablished by running the calibrations. Unfixed Jets Report The Unfixed Jets Report displays a table showing, for each print mode, which colors are printing with nonworking inkjets that are not being automatically replaced with working jets by AutoJet mapping ("unfixed" inkjets). For each combination of ink color and print mode, "No" means there are no unfixed jets, "Yes" means there are unfixed jets. Linearization As the density of an image varies from highlights to shadows, or from lighter to darker tints, the printer should accurately reproduce these areas in a predictable, or linear, fashion. The process of linearization (or color calibration) involves printing and reading color test patches, and calibrating the printer to ensure that the expected and printed densities will match. This in turn will ensure optimal color matching. Color calibration is a feature of the RIP connected to the printer. Refer to the documentation that accompanies the RIP for further information. 58 Chapter 7 Calibrate the printer ENWW

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4.
Press
►
.
The head selection screen appears.
5.
Repeat steps 1 through 4 for any other printhead, or press n to return to the menu.
Clear All Bad Jets
When you select Clear All Bad Jets, the control panel displays the following prompt:
Are you sure you want to clear ALL reported bad jets?
●
Press
Cancel
to cancel this function, or
●
Press
Proceed
. The control panel displays this message:
Do you want to clear the hard bad jets?
●
Press
No
to clear the soft bad jets only, or
●
Press
Yes
to clear both the hard and soft jets.
The control panel displays this message:
All reported bad jets have been cleared.
▲
Press
Proceed
(
►
).
When you have finished mapping jets, the following summary appears on the control panel:
x soft jets currently reported bad. x hard jets currently reported bad. x new soft bad jets reported. x new
hard bad jets reported. x previous soft bad jets cleared. x previous hard bad jets cleared.
where x is the number of jets.
Default Registration Data
This option enables you to reset bidi registration, head-to-head registration, or jet mapping data, or any
combination of them. After running this option, the deleted calibration values must be reestablished by
running the calibrations.
Unfixed Jets Report
The Unfixed Jets Report displays a table showing, for each print mode, which colors are printing with non-
working inkjets that are not being automatically replaced with working jets by AutoJet mapping (“unfixed”
inkjets). For each combination of ink color and print mode, “No” means there are no unfixed jets, “Yes” means
there are unfixed jets.
Linearization
As the density of an image varies from highlights to shadows, or from lighter to darker tints, the printer
should accurately reproduce these areas in a predictable, or linear, fashion. The process of linearization (or
color calibration) involves printing and reading color test patches, and calibrating the printer to ensure that
the expected and printed densities will match. This in turn will ensure optimal color matching.
Color calibration is a feature of the RIP connected to the printer. Refer to the documentation that
accompanies the RIP for further information.
58
Chapter 7
Calibrate the printer
ENWW