Canon iP4300 Simplified Service Manual page 54

(9-1. FAQ cont'd)
No. Rank Function Phenomenon
6 C Print Soiling on paper
results
7 B Print - Skewed paper feeding
results
*1: Change the paper in each Bottom plate cleaning. The cleaning can end when paper does not get any soiling.
*2: Locations to clean in servicing when soiling on paper in automatic duplex printing persists:
*3: How to prepare and set the ASF sub-roller cleaning sheet:
1) Fold a sheet of plain paper lengthwise in half.
Condition
The printer has been used for a Due to ink mist attached to the ASF
long period of time with the ASF sub-pick-up rollers.
cover closed before printing is If printing is done from the cassette with
performed using the ASF. the ASF cover closed, ink mist is kept
inside the printer, attaching to the ASF
sub-pick-up rollers.
Since the sub-rollers usually do not
contact the paper, ink mist can easily
accumulate, especially during printing
on small-sized paper which never
contacts the sub-rollers.
- SG-101 When 10 sheets of paper are set in the
- Paper feeding from the ASF ASF, and if they warp significantly, the
- 10 sheets (max.) set in the ASF warping portions of paper get over the
cover guide, not being aligned along the
guide properly.
Cause
Clean the ASF sub-rollers (see *3
for details.)
- Straighten the paper.
- Set 5 or less sheets of paper in
the ASF.
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Corrective action Possible call or complaint
- Paper feeds at an angle.
- A margin appears on
printouts.