Canon imageRUNNER ADVANCE C5255, Руководство по обслуживанию, Страница: 95 / 1443

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Technology > Image Formation System > Controls > Transfer/separation
Technology > Image Formation System > Controls > Transfer/separation
● Primary transfer disengagement control
The primary transfer roller for color is engaged or disengaged to keep longer life of the image
formation parts (photosensitive drum, ITB)
Execution timing
• Roller to be engaged: when making color prints (If 2 and more sheets of Bk continues
within a job at Color + Bk mix printing, disengage the Primary Transfer Roller when printing
color)
• Roller to be disengaged: anytime other than the above timing
Control description
1) Drive of the primary transfer disengagement motor (M15) rotates the cam.
2) Rotation of the cam moves the support arm up/down, which separates (disengages) the
color primary transfer roller from the ITB.
3) Position of the primary transfer roller is detected by the Primary transfer detachment sensor
(PS22/23).
MEMO:
• At standby, the color’s primary transfer roller is disengaged.
Primary transfer
roller(C)
Primary transfer
disengagement
sensor 1(PS22)
Primary transfer
disengagement
sensor 2(PS23)
Primary transfer
disengagement
motor(M15)
Sensor flag
Primary transfer
roller(Y)
Primary transfer
roller(M)
Support arm
Support arm
Cam
Drive shaft
ITB
Drive shaft
Primary transfer
auxiliary roller
Related error code
E074-0001: Error in ITB disengagement operation
E074-0002: Error in ITB engagement operation
E074-0003: Breakdown of Primary Transfer Pressure Sensor and Primary Transfer Disengage
Sensor.
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