Trailing Edge Image Soiling; Repetitive Image Defects Ruler - Canon D1300 Series Service Manual

Trailing edge image soiling

[Cause]
The image is extended when the paper feed speed is increased due to the temperature rising
in the machine.
This causes the trailing edge margin to become narrow, resulting in the occurrence of image
soiling (transfer toner scattering).
NOTE :
Because paper slightly shrinks due to its passing through the Fixing Assembly once
when printing the 1st side, this symptom is likely to occur on the 2nd side.
[Field Remedy]
Remedy (1): Set the Special Mode U to ON.
Effect: Image soiling is controlled by changing the settings of transfer high voltage current.
Remedy (2): Change the paper type mode from "Plain" to "Plain L".
Effect: Fixing control temperature is reduced => Temperature rising in the machine is
controlled => Reduction of trailing edge margin is controlled.
When the effect is not enough with remedy (1), perform the remedies (1) + (2).
6
Trouble Shooting > Trouble Shooting Items > Repetitive Image Defects Ruler
6 Trouble Shooting > Trouble Shooting Items > Repetitive Image Defects Ruler

Repetitive Image Defects Ruler

Component Distance between defects (mm)
Registration roller
Primary charging roller
Photosensitive drum
Developing roller
Transfer roller
Fixing film unit
Pressure roller
6-4
About 43
About 38
About 75
About 42
About 39
About 57
About 63
T-6-3
6-4