Konica Minolta bizhub c10 Service Manual page 67

12. Developing section
E. Toner cartridge rack stop position detection
• The toner cartridge rack stop position for each color of toner is detected by the rack
motor and the rack positioning sensor.
• The toner cartridge rack is provided with slits, each for a specific color of toner. When the
rack rotates, the rack positioning sensor is blocked and unblocked.
A specific stop position is detected when the rack positioning sensor is blocked and
unblocked.
Rack Positioning Sensor
(1) Toner cartridge rack standby position
• The standby position is 45° before the developing position of the K toner cartridge. The Y
toner cartridge is therefore provided with a slit for detecting the K developing position.
• When the toner cartridge rack is rotated, the rack positioning sensor moves past the slit
for detecting the K developing position. This allows the machine to determine that the
current development is for K. Through pulse control of the rack motor, the machine then
successfully brings the toner cartridge rack to its standby position.
Direction of Rotation of
the Toner Cartridge Rack
Standby Position Detecting Position
K
Detection of M
Developing
Position
36
Confidential – for internal use only, do not distribute
Slits
4139to2072e0
Rack Positioning
Sensor
C M
Detection of Y Detection of K
Developing Developing
Position Position
Theory of operation ver. 2.0 Nov. 2007
C
K
M
Toner Cartridge
Rack Standby
Position
Y
Y
Detection of C
Developing
Position
4139to1583c0
4139T2E569AA