81
v
Drum Driving Section
chap.2
(2) Master Attach/Detach Position Sensor
The master attach/detach position sensor detects the drum stop position when the plate is attached or
detached. It also detects the speed reducing timing for stopping at the printing speed and for pressing the
JOG switch (drum rotation switch).
Operation
The following is the state of the master attach/detach position sensor while the drum is rotating.
2
The master detachment position is detected with the edge of
photopassing
f
photointerrupting.
2
The master set position is detected with the edge of
photointerrupting
f
potopassing.
2
The drum speed is reduced to the slow (before-stop) speed at the master removal position before the drum
stops.
Master attach/detach position sensor(PS6)
Red
Blue
CN17-12
1
2
3
-14
Purple
-13
5V
5V
5V
0
M a i n P C B u n i t
Photopassing :0V
Photointerrupting:5V
Circuit
440W20e
Master attach/detach position sensor
Master detach
position
Master attach
position
Master detach
position
Master attach
position
440321
Drum position cam
Master detach position edge
Master attach position edge
Master attach/detach
position sensor
Содержание Duprinter DP-330
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