12. Developing section
Theory of operation ver. 2.0 Nov. 2007
36
bizhub C10
Composition/Operation
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.
(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.
4139to2072e0
Rack Positioning Sensor
Slits
4139to1583c0
4139T2E569AA
Y
M
C
K
Y
M
C
K
Detection of C
De
v
eloping
Position
Detection of K
De
v
eloping
Position
Detection of Y
De
v
eloping
Position
Detection of M
De
v
eloping
Position
Stand
b
y Position Detecting Position
Rack Positioning
Sensor
Direction of Rotation of
the Toner Cartridge Rack
Toner Cartridge
Rack Stand
b
y
Position
Confidential – for internal use only, do not distribute