44292401TH Rev.1
38 /
Oki Data CONFIDENTIAL
COMPOSITION/OPERATION
13.3.3
Cleaning blade pressure/retraction mechanism
• In color printing, an image is formed on the transfer belt for each color of toner. The
cleaning blade is therefore provided with a pressure/retraction mechanism.
• The machine is not, however, provided with a pressure/retraction sensor. Instead, the
IDC sensor detects a sample image on the transfer belt to control the pressure/retraction
operation.
• In monochrome printing, no retraction sequence is carried out.
• The cleaning blade is normally in pressed contact with the transfer belt.
A. Pressure/retraction operation
• The cleaning blade pressure/retraction operations are performed by the Transport motor
(M1), Cleaning blade pressure/retraction solenoid (SD5), pressure cam, and the lever.
• When the Cleaning blade pressure/retraction solenoid (SD5) is energized, drive from the
Transport motor (M1) is transmitted to the pressure cam.
A034T2C529AA
Transport motor (M1)
Cleaning blade
Cleaning blade pressure/
retraction solenoid (SD5)
Pressure
cam
Pressure cam
13.3.3
Cleaning blade pressure/retraction mechanism
B. Operation timing
C. Retraction sequence
1.
Drive from the Transport motor (M1) is transmitted to the drive gear.
2.
Rotation of the drive gear is transmitted to the pressure cam.
3.
When the Cleaning blade pressure/retraction solenoid (SD5) is energized, the half-
moon-shaped pressure cam rotates a half turn to push the lever forward.
4.
When the lever is pushed forward, the cleaning blade is retracted.
5.
When the cleaning blade is retracted, it results in the cleaning blade being retracted
from the transfer belt.
A034T2E584AA
Retraction stop
Pressure stop
Pressure stop
Retraction stop
During pressure operation
During retraction operation
Cleaning blade pressure/
retraction solenoid
Cleaning blade pressure/
retraction solenoid
Cleaning blade pressure/
retraction condition
㪦㪥
㪦㪝㪝
㪦㪥
㪦㪝㪝
Cleaning blade pressure/
retraction condition
Point of contact with the transfer belt
Point of contact with the transfer belt
A034T2C553AA
Cleaning blade pressure/retraction solenoid (SD5)
Cam
Cleaning blade
lever
Содержание MC160MFP
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