Theory of Operation Ver. 1.0 Sep. 2008
14. Transfer corona section
63
bizhub C200
Composition/Operation
14.3.3
2nd image transfer roller pressure mechanism
• The 2nd image transfer roller has the pressure/retraction mechanism which presses to
and retracts from the transfer belt so the patterns made on the transfer belt except by
printing (such as detection pattern during image stabilization) will not affect the 2nd
image transfer roller.
A. Pressure/retraction operation
• Pressure operation
1.
Rotation of the 2nd image transfer retraction motor is transmitted to the cam.
2.
The cam rotated from the retraction position releases the pressure lever. This
causes the 2nd image transfer roller to be pressed against the transfer belt by the
spring.
• Retraction operation
1.
The cam rotated from the pressure position pushes down the pressure lever at the
retraction position, which results in the 2nd image transfer roller to be retracted.
• Operation timing
4038T2C167AA
4038T2C168AA
2nd image transfer roller
When retracted
When pressed
Transfer belt
Cam
Pressure lever
4038T2C022DA
2nd image transfer retraction sensor (PS36)
2nd image transfer retraction motor (M5)
Cam
Pressure lever
Spring
A02FT2C051AA
Start key ON
Paper moves past 2nd image transfer roller
Transport motor (M1)
2nd image transfer welding alienation sensor
(PS36)
2nd image transfer retraction motor (M5)
Y109670-2 Theory of Operation