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No.9 Black Line
Phenomenon
Fine black line appears in the printed image as shown in the print sample of upper right
corner.
Main Causes
1). Wire grid of the charger unit is smeared.
2). OPC belt's surface is damaged.
3). Foreign particles (paper dust, etc.) are stuck in between the cleaning blade and OPC
belt.
4). Debris adhering to the base of toner cartridge's developer roller contacts to OPC
belt.
OPC Belt Cartridge
Foreign
Particles
Countermeasures
1). Remove the belt cartridge.
1-1). Clean the charger unit. (See Section 5.1.2(4).)
1-2). Replace the belt cartridge to a new cartridge. (See Section 5.2.1.)
2). Remove foreign particles adhering to the surface of developer roller.
Developer Roller
Toner Cartridge
@ (K,Y,M,C)
K
Y
M
C
Charge
8-46
OPC Belt Cartridge
Cleaning Belt
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