Page Error Marks (PEMs) can occur on prints in particular when using global shifts in transaction printing. This topic explains the occurrence of PEMs and offers a solution to PEMs.
The figure below provides a brief explanation about when PEMs occur. As soon as a part of the printable data and/or objects are placed outside the page boundary, a PEM occurs on the sheet. A bitmap may consist of large parts of white pixels. The renderer also considers those pixels to fall outside the page boundary, and thus inserts PEMs.
The occurrence of PEMs is related to the chosen workflow. When submitting Postscript jobs in IPDS mode through the host, e.g. PRISMAproduction, all pages in the job are translated to full-page bitmaps in the IPDS stream. This means that the bitmap is exactly the size of the A4 page. Any shift that occurs will immediately lead to pixels that are outside the page boundary and thus lead to PEMs, see the figure below.
You can prevent PEMs in two manners:
Change the workflow to printing Postscript data in DP mode.
Disable generation of PEMs in the host, e.g. PRISMAproduction.