MX-FN17 - Marks on back of pages

[oeshuron]

Have two marks on backside of pages which appear to be caused by the bunch rollers in the MX-FN17. Their location never changes when it happens and is in the middle of the page and the majority of the mark can be wiped away. Timing issue? Sensor issue? Changed the bunch rollers and tried 3 different finishers to no avail. Also updated/checked machine and finisher firmware. Any ideas?

[Phil B.]

Re: MX-FN17 - Marks on back of pages

Have two marks on backside of pages which appear to be caused by the bunch rollers in the MX-FN17. Their location never changes when it happens and is in the middle of the page and the majority of the mark can be wiped away. Timing issue? Sensor issue? Changed the bunch rollers and tried 3 different finishers to no avail. Also updated/checked machine and finisher firmware. Any ideas?

check the fuser

[Hansen88]

Re: MX-FN17 - Marks on back of pages

Try to stop paper before it gets to the finnisher and see if the marks are there.

[oeshuron]

Re: MX-FN17 - Marks on back of pages

check the fuser

See below.

Try to stop paper before it gets to the finnisher and see if the marks are there.

Marks do not appear until after fuser. Hence the reasoning for trying 3 different finishers. We are thinking of trying different paper.

[oeshuron]

Re: MX-FN17 - Marks on back of pages

Tried different fuser unit as well as different paper and did not resolve the issue.

[driving lots of miles]

Re: MX-FN17 - Marks on back of pages

If it is not the finisher or the fuser and the marks come after the fuser it has to come from the paper path between the fuser and finisher, so I would start dissembling that area and cleaning everything there. It could be toner build up along the paper path transferring to the warm paper.

[Phil B.]

Re: MX-FN17 - Marks on back of pages

If it is not the finisher or the fuser and the marks come after the fuser it has to come from the paper path between the fuser and finisher, so I would start dissembling that area and cleaning everything there. It could be toner build up along the paper path transferring to the warm paper.

if there are FOAM rollers in there they could be covered in toner...

[mojorolla]

Re: MX-FN17 - Marks on back of pages

I believe there are a few bulletins regarding this and the replacement, re-arrangement of the foam rollers at exit. Its been a while but I seem to remember the foam rollers are completely removed when a finisher is added....