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CF5001 Ver.1.0 Sep. 2003 TRANSFER BELT UNIT
2-31
II UNIT EXPLANATION
5.2.2 Image correction unit
A. Composition
B. Shutter mechanism
The image correction unit is provided with a shutter mechanism that allows the sensor to be exposed only
when necessary to prevent the contamination of various types of sensors.
The color registration sensor shutters /F and /R that protect the color registration sensors /F and /R (PS8
and PS9) are opened and closed by the color registration shutter solenoid (SD2). And also, the image den-
sity sensor shutter that protects the gamma sensor (PS11) is opened and closed by the image density
sensor shutter solenoid (SD3).
Symbol Name Function or method
[1]
Gamma sensor shutter solenoid (SD3)
Open/close of the image density sensor shutter
24 VDC drive
[2]
Color registration shutter solenoid (SD2)
Open/close of the color registration sensor shutters /F and /R
24 VDC drive
[3] Gamma sensor shutter Prevention of contamination of the Dmax sensor (PS10) and
the Gamma sensor (PS11)
Open/close method by means of the image density sensor
shutter solenoid (SD3)
[4] Gamma sensor (PS11) Detection of the maximum density and the gamma characteris-
tics of the patch image on the transfer belt
[5]
Color registration sensor /F (PS8)
Detection of the transfer image position on the front side in the
direction of the main scan
[6]
Color registration sensor shutter /F
Prevention of contamination of the color registration sensor /F
(PS9)
[7]
Color registration sensor shutter /R
Prevention of contamination of the color registration sensor /R
(PS9)
[8]
Color registration sensor /R (PS9)
Detection of the transfer image position on the rear side in the
direction of the main scan
DRIVE
DRIVE
PRCB
8050ma2017
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