HP Indigo WS6600 Working with Indigo ElectroInk SilverHow-to Guide - Page 22

Manual overlap adjustments, Bypasses > Processes, Job Properties

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The "overlap prevention" feature reduces the background in the overlap area by having the press disengage the relevant BID after a repeat length of a printed job. IMPORTANT: If the overlap prevention option is activated, it is necessary to add a null cycle between silver hits. Make sure that the Auto-Null adding on double-hit printing option in the Print Care (CE level) > Bypasses > Processes screen is NOT selected! Once the "overlap prevention" option is selected for an ink, it is possible to clear it for any specific job, under its Job Properties - see Manual overlap adjustments on page 18. For the overlap prevention to work properly, printing is possible only in step mode, and not as continued printing. (It is impossible to correct the mode during print, although the window is enabled). The "overlap prevention" feature supports only jobs in which the Repeat Length is ≥ job length. The feature will not allow reducing the Silver separation length to be less than the minimum repeat length allowed by the press. If the "overlap prevention" feature is activated and there is still a heightened level of background in the overlapped area, troubleshoot the issue as described in Manual overlap adjustments on page 18. NOTE: The overlap prevention parameters will not be saved if a job is removed from the press, or the press is shut down. Manual overlap adjustments Follow these steps to adjust the background overlap manually. Manual adjustments to prevent / reduce background in the overlap area between two consecutive spreads/images are recommended for "fine tuning" when the automatic mode (see above) does not provide a proper correction. Manual adjustments are limited. In cases where overlapping still exists after the automatic adjustments, it is recommended to first perform BID Engage calibration and only then -if there is still overlapping- perform manual fine-tune corrections. IMPORTANT: Manual overlap adjustments are done for the specific job, and are not applicable to other jobs. 18 Chapter 4 Working with HP Indigo ElectroInk Silver

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The “overlap prevention” feature reduces the background in the overlap area by having the press
disengage the relevant BID after a repeat length of a printed job.
IMPORTANT:
If the overlap prevention option is activated, it is necessary to add a null cycle between
silver hits. Make sure that the
Auto-Null adding on double-hit printing
option in the Print Care (CE level) >
Bypasses > Processes
screen is NOT selected!
Once the “overlap prevention” option is selected for an ink, it is possible to clear it for any specific job,
under its
Job Properties
— see
Manual overlap adjustments
on page
18
.
For the overlap prevention to work properly, printing is possible
only in step mode
, and not as continued
printing. (It is impossible to correct the mode during print, although the window is enabled).
The “overlap prevention” feature supports only jobs in which the Repeat Length is ≥ job length. The
feature will not allow reducing the Silver separation length to be less than the minimum repeat length
allowed by the press.
If the “overlap prevention” feature is activated and there is still a heightened level of background in the
overlapped area, troubleshoot the issue as described in
Manual overlap adjustments
on page
18
.
NOTE:
The overlap prevention parameters will not be saved if a job is removed from the press, or the
press is shut down.
Manual overlap adjustments
Follow these steps to adjust the background overlap manually.
Manual adjustments to prevent / reduce background in the overlap area between two consecutive
spreads/images are recommended for “fine tuning” when the automatic mode (see above) does not
provide a proper correction.
Manual adjustments are limited. In cases where overlapping still exists after the automatic adjustments,
it is recommended to first perform BID Engage calibration and only then —if there is still overlapping—
perform manual fine-tune corrections.
IMPORTANT:
Manual overlap adjustments are done for the specific job, and are not applicable to
other jobs.
18
Chapter 4
Working with HP Indigo ElectroInk Silver