Marks On Image Caused By Friction Due To Mini Gripper Edge (Perfect Binder- B1/D1/E1) - Canon imagePRESS C850 Series Troubleshooting Manual

Marks on image caused by friction due to mini gripper edge
(Perfect Binder- B1/D1/E1)
[Symptom]
The marks caused by friction [A] may appear on the first and last pages of glued stacked of sheets during printing.
[Reference] This symptom remarkably occurs on glossy paper such as coated paper.
[Cause]
The stuck of sheets loaded on the height tray assembly is fed by sub gripper assembly and then transferred to the main gripper
assembly. The marks caused by friction are put on the first and last pages of glued stacked of sheets due to the edges of round
holes [a] of mini gripper [1] being located at the upper and lower sides of main gripper assembly when transferring.
[Service work]
If the above-mentioned symptom occurs, prepare the sheet kit (4Y8-3138-000) to affix the sheet on the mini gripper being located
on the upper and lower sides of main gripper assembly.
1) Turn off the main power of perfect binder and then unplug the power cord.
2) Remove the parts below referring Service Manual.
- Front Covers (Left/Right)
- Rear Cover
- Rear Upper Cover
- Inner Cover (Upper/Lower)
3) Turn on the right front cover switch and left front cover switch by inserting the service tool or the like.
16