Canon iR Advance 400iF/ 500iF Large curl of paper

[Serviceman]

Models list: Canon imageRUNNER ADVANCE 500iF, 500i, 400i, 400iF
Image Failure: Large curl of paper

Location
Fixing Assembly

Cause
Excess heat from fixing changes moisture content between the front and back of paper, which causes large curl.

Condition
Paper left untouched in a high humidity environment

Field Remedy
• Service mode (Lv.2)> COPIER> OPTION> IMG-FIX> TMP-TBLC> 0 to 3
0: Auto
1: OFF
2: N1 mode with plain paper 1/2 (Target temperature becomes low.)
3: N3 mode with plain paper 1/2 (Target temperature becomes moreover low.)

[feepiftinc]

in the professional printing word, large printers only buy paper rated at certain, measured moisture content, so they can optimize their printing runs for maximum speed/ quality. they will return truck loads of paper that is not within their specified moisture specs.

[Rufusvef]

Models list: imageRUNNER ADVANCE 500iF, 500i, 400i, 400iF
Image Failure: Toner soiling at the back side of paper
LocationFixing Assembly circumference of Pressure Roller: 94mm
Transfer Roller roller circumference: 50mm
CauseFixing Assembly: Toner on the paper comes off and adheres to the Pressure Roller, and then the toner adheres to the back side of the paper.
Transfer Roller: Toner remains on the Drum that has stopped at the time of paper jam, and then the residual toner on the Drum adheres to the Transfer Roller during a recovery operation.
ConditionFixing Assembly: Under conditions that causes poor fixing performance, such as low temperature environment, or when feeding a large number of sheets of halftone image. Or the Fixing Unit comes to the end of its life for replacement.
Transfer Roller: When a paper jam occurs. Or the Transfer Roller comes to the end of its life for replacement
Field RemedyFixing assembly: Service modeLv.2> COPIER> FUNCTION> CLEANING> FIX-CLN> OK
Transfer Roller: Service modeLv.2> COPIER> FUNCTION> CLEANING> TR-CLN> OK