Canon imagePRESS C1 P, Service Manual, Page: 394 / 1265

Chapter 7
7-45
DC-CON: DC controller
M4: developing rotary motor
PS21: developing rotary home position sensor
7.6.3 Developing Rotary Control
0013-9863
imagePRESS C1 P / imagePRESS C1
This machine moves the developing units (Y, M, C, Bk), which are stored in the developing rotary, timely to the specified position.
The DC controller moves the developing rotary by turning ON and OFF the developing rotary motor (M4) while monitoring the rotary position with the developing
rotary home position sensor (PS21).
The DC controller executes detection of the rotary position by monitoring PS21.
A home position detection flag is equipped at the back of the rotary. The DC controller detects the rotary's home position to let the detection flag pass the PS21.
Based on this home position, the DC controller rotates the rotate the rotary, and then, stops the rotary at the specified position.
The rotary stop positions are the following 11 points.
- home position: 1-point
- developing standby position: 2-point total (each 1-point for monochrome and color)
- developing position of each color: 4-point total
- ATR control stop position: 4-point total (see the ATR control)
F-7-55
DC-CON: DC controller
M4: developing rotary motor
PS21: developing rotary home position sensor
Memo:
To prevent rotating shock of the rotary, the developing unit is shifted to the standby position of the developing unit before performing image formation.
M4
DC-CON
PS21
FLAG