18-12.Transfer Belt Cleaning Mechanism; 18-13.2Nd Image Transfer Roller Cleaning Mechanism - Minolta CF1501 Service Manual

18-12. Transfer Belt Cleaning Mechanism
• The Cleaning Blade scrapes any residual toner off the surface of the Transfer Belt.
• The Transfer Belt is turned backward to remove paper dust wedged between the Clean-
ing Blade and Transfer Belt.
Operation Timing
Transfer Belt
Driven Roller
4004M043AA
18-13. 2nd Image Transfer Roller Cleaning Mechanism
• To remove residual toner from the surface of the 2nd Image Transfer Roller, a reverse
bias is applied to the roller.
• The residual toner is moved to the surface of the Transfer Belt, from which the Cleaning
Blade scrapes it.
Operation Timing
Bias Contact
2nd Image Transfer Roller
1st Image Transfer Pressure
/Retraction Motor (M11)
2nd Image
Transfer CHG
2nd Image Transfer Pressure
/Retraction Clutch (CL15)
When Power Switch is turned ON
For every 100 copies made
Cleaning Blade
When Power Switch is turned ON
When Front Door is opened and closed
For every 100 copies made
Start of post processing
Retracted
ON
OFF
OFF
Reverse Bias
ON
OFF
M-78
4004M011AB
4004M042AB
Retracted
4004M076CA