107
m
Drum Section
chap.2
(6) Drum Shift Mechanism
Description
The printing position (left and right) can be switched automatically via the operation panel. If the position is
changed via the operation panel, the sideways stepping motor starts moving by turning the
key on.
Operation
Shifting amount of the printing position in the primary scanning is detected by combining the drum center
sensor and the drum limit sensor to detect the standard position by using the drum center senor.
* Operation during plate making
The following operations are performed by pressing the
PLATEMAKING
key.
When the sideways stepping motor is rotated clockwise (CW), the drum is shifted from the drum home
position to the plate making position (opposite from the control).
After master setting, the drum is returned to the drum home position by rotating the sideways stepping
motor counterclockwise (CCW).
Drive PCB unit
Main PCB unit
Pink
Blue
Sideways stepping motor
-3
-4
Yellow
-5
White
-6
Light green
-2
Black
CN14-1
4
6
2
5
1
3
M
Drum limit sensor
Red
Blue
CN21- 7
1
2
3
- 9
Glay
- 8
5V
5V
5V
0
1
3
15
16
3
5
2
4
4
Photopassing :0V
Photointerrupting:5V
Drum center sensor
Red
Blue
1
2
3
-12
White
-11
5V
5V
5V
0
4
6
5
6
6
8
5
17
7
Photopassing :0V
Photointerrupting:5V
-10
Circuit
Sensor
440W34e
Drum limit sensor
440361
Drum center sensor
Sideways stepping motor
Содержание Duprinter DP-330
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