Drive; Operation; 2Nd Transfer Roller Pressure Mechanism - Konica Minolta magicolor 5550 Service Manual

Theory of operation Ver. 1.0 Nov. 2006

14.2 Drive

Transfer belt drive roller
Retraction cam
Retraction position
sensor/2 (PS10)

14.3 Operation

14.3.1

2nd transfer roller pressure mechanism

• The main body is provided with a mechanism that presses the 2nd transfer roller up
against, and retracts it from, the transfer belt. This is done to prevent the 2nd transfer
roller from being dirtied due to patterns produced for purposes other than an actual print-
ing operation. Such patterns may be produced during the image stabilization sequence
or another function.
A. 2nd transfer roller pressure
• The 2nd transfer roller is pressed against the transfer belt to allow the toner image on the
transfer belt to be transferred onto the media.
• The 2nd transfer roller is pressed against the transfer belt to allow the roller to be
cleaned.
B. 2nd transfer roller retraction
• The 2nd transfer roller is retracted from the transfer belt when a detection pattern is pro-
duced on the transfer belt for registration correction control, image stabilization control,
or other control.
• The 2nd transfer roller is retracted from the transfer belt when the toner image on the
transfer belt cannot be transferred to the media due to a media empty condition occurring
during printing.
• The 2nd transfer roller is retracted from the transfer belt after the 2nd transfer of the last
image is completed during a multi-print cycle.
14. Transfer section (2nd transfer)
Transfer belt drive roller
Pressure/retraction
clutch/2 (CL5)
4138to2048c0
Retraction cam
Pressure/retraction clutch/
2 (CL5)
Retraction
position
sensor/2 (PS10)
4138to2585c0
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