HP Indigo WS6600 Working with Indigo ElectroInk SilverHow-to Guide - Page 7

Bypasses, > Processes, Auto Bias Wizard, perform Full Color Calibration FCC.

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Page 7 highlights

● When using HP Indigo ElectroInk Silver, it is highly recommended to carefully test jobs before first time production, including labeling or lamination (in flexible packaging). ● Results depend mainly on the design of the artwork. The background is likely to be more visible in jobs where there is a large exposed substrate as part of the design. ● It is very important to calibrate the ink accurately. Make sure that the calibration can is emptied all the way. ● Silver separations are usually defined last (except for white, and depending on the graphics and required effect). ● Add a null cycle between silver separations to avoid BID bounce at the leading edge. Add a null by clearing the bypass for Auto-Null adding on double-hit printing in the Print Care (CE level) > Bypasses > Processes screen. ● When printing with Silver, a low background appearance is possible. A specific calibration is available to eliminate the double appearance of background in frame-overlap areas. IMPORTANT: Overlap prevention will not work if there is no null, and it is more likely to suffer for BID bounce issues. ● It is recommended to use HP Indigo ElectroInk Silver with 2 hits in order to reach the OD (optical density) targets and best metallic appearance. The optimized color working point is based on 2 hits of ElectroInk Silver. Calibrations are performed on 2 hits of ElectroInk Silver. ● HP Indigo ElectroInk Silver is visually stable, therefore it is not necessary / not recommended to perform Full Color Calibration (FCC). IMPORTANT: When performing Full Color Calibration without silver, run the Auto Bias Wizard following every color calibration (important for ElectroInk Silver). ● It is recommended to disable the automatic color calibration feature, as described in Disabling automatic color calibration on page 11. Performance and recommendations 3

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●
When using HP Indigo ElectroInk Silver, it is highly recommended to carefully test jobs before first
time production, including labeling or lamination (in flexible packaging).
●
Results depend mainly on the design of the artwork. The background is likely to be more visible in
jobs where there is a large exposed substrate as part of the design.
●
It is very important to calibrate the ink accurately. Make sure that the calibration can is emptied all
the way.
●
Silver separations are usually defined last (except for white, and depending on the graphics and
required effect).
●
Add a null cycle between silver separations to avoid BID bounce at the leading edge. Add a null by
clearing the bypass for
Auto-Null adding on double-hit printing
in the Print Care (CE level) >
Bypasses
> Processes
screen.
●
When printing with Silver, a low background appearance is possible. A specific calibration is
available to eliminate the double appearance of background in frame-overlap areas.
IMPORTANT:
Overlap prevention will not work if there is no null, and it is more likely to suffer for
BID bounce issues.
●
It is recommended to use HP Indigo ElectroInk Silver with 2 hits in order to reach the OD (optical
density) targets and best metallic appearance. The optimized color working point is based on 2 hits
of ElectroInk Silver. Calibrations are performed on 2 hits of ElectroInk Silver.
●
HP Indigo ElectroInk Silver is visually stable, therefore it is not necessary / not recommended to
perform Full Color Calibration (FCC).
IMPORTANT:
When performing Full Color Calibration without silver, run the
Auto Bias Wizard
following every color calibration (important for ElectroInk Silver).
●
It is recommended to disable the automatic color calibration feature, as described in
Disabling
automatic color calibration
on page
11
.
Performance and recommendations
3