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Many sheets arrive in the sentry tray
The sentry of the printer checks all sheets that enter the print engine during the first pass (for
simplex printing) and again during the second pass (for duplex printing). The printer checks
sheets on deformations—like curls, waves, tight edges, and damages—to prevent printhead
touching.
The sentry measures deformations and calculates if the deformation height is larger than the
current print gap. Based on this calculation, a sheet is ejected into the sentry tray or not.
[464] Sheets with curl or tight edges (1), sheets with wavy edges (2), damaged sheets (3)
The printer automatically corrects the order and contents of the document pages when sheets are
removed due to sentry ejections.
You can use PRISMAlytics Dashboard to monitor the number of sentry rejections per used media.
[465] Example of PRISMAlytics Dashboard information
Read the sentry rejections overview
The sentry rejections overview informs you about the sentry rejections and their possible cause.
Read the sentry rejections overview on page 405
First pass sentry rejection
For the first pass, the sentry checks the sheets that directly come from the paper module.
1
Many sheets arrive in the sentry tray
2
Chapter 14 - Problem Solving
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