4-2 Toner cartridges
The toner cartridges for the four colors Y (yellow), M (magenta), C (cyan), and K (black) are stored on the toner car-
tridge rack.
• During printing, the toner cartridges are rotated by the rack motor (M3), and the cartridge for each color is moved in
the sequence Y, M, C, K to the developing position.
Toner cartridge rack
Direction of rotation
Name
1. Black toner cartridge home position-detect-
ing sensor
2. Toner empty-detecting sensor port
3. Toner color identification rib
Y
K
C
1
The sensor and breaker plate detect when the toner cartridge for
the black toner is in the developing position (home position).
This port detects whether or not the toner cartridge has toner in
it.
This rib identifies the color of the toner when each toner car-
tridge is inserted into the rack.
C-12
Toner cartridge
Drum
OPC Drum
M
2
Function
3