Confidential
9-41
I-17
Color Misregistration
Phenomenon
Color misregistration is caused between two colors as shown in print sample [17] of Fig.9-1.
Main Causes
(1) The OPC belt off-track error.
(2) The OPC belt fails to maintain the regular and proper rotation due to the impact caused when
the toner cartridge contacts the OPC belt.
(3) The transfer belt off-track error.
(4) The transfer belt fails to maintain the regular and proper rotation due to the impact caused
when the transfer roller contacts the transfer belt.
Fig. 9-18
Countermeasures
(1) Confirm that the transfer roller ASSY PU is properly installed.
(2) Confirm that the c
leaning roller PU is properly installed.
(3) Replace the belt cartridge PU with a new belt cartridge PU.
(4) Replace the transfer unit PU with a new transfer unit PU.
Belt cartridge PU
Toner cartridge PU
(K, Y, M, C)
Cleaning roller PU
Transfer unit PU
Transfer roller ASSY PU
OPC belt
Paper exit roller
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