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7-1. Developing Position
(1) Toner Cartridge Rack Stop Position for Development
• The stop position for development of each Toner Cartridge is determined by the Rack
Lock Lever and the Rack Home Position Sensor (PC4).
• The Toner Cartridge Rack rotates and the Rack Lock Lever drops into a stopping cutout.
This unblocks the Rack Home Position Sensor (PC4), thus determining the stop position
for the Toner Cartridge for the current use.
(2) Toner Cartridge Rack Standby Position
• The standby position (reference position) of the Toner Cartridge Rack is 20
° ahead of the
developing stop position of the black Toner Cartridge.
• When the Toner Cartridge Rack rotates and the Rack Lock Lever moves past the black
position detection cutout (PC4: blocked -> unblocked), the rotating speed of the rack is
decelerated.
Yellow Stopping Cutout
Cyan Stopping Cutout
Magenta Stopping
Cutout
Black Stopping Cut-
out
Black Position
Detection Cutout
PC Drum
Rack Lock Lever
Rack Home Position Sensor (PC4)
Rack Home Position Sensor (PC4)
Rack Lock Lever
4131M049AA