Duplo DUPRINTER DP-440 - Double Feed Detection Mechanism

70
c Paper Feed Section
chap.2
Description
Circuits
Double feed detection sensor
photo-receiving PCB
(2) Double Feed Detection Mechanism
The double feed detection sensor is mounted at the rear of the paper lead edge sensor to detect feeding of multiple papers.
When it is detected, “DOUBLE FEEDING ERROR” is displayed on the LCD. If double feeding occurs with the
tape cluster (optional) equipped, the tape is inserted.
440W32e
440354
Blue
CN4-1
-2
Main PCB unit
Drive PCB unit
Main PCB unit
Light green
5V
5V
5V
5V
4
3
-8
CN8-7
Glay
Blue
1
2
Paper lead edge sensor
photo-emitting PCB
Double feed detected sensor
photo-receiving PCB
-10
CN8-9
White
Blue
1
2
Signal sensor
photo-emitting PCB
-6
CN4-5
Blue
Pink
4
Blue
CN8-11
-12
Orange
5V
2
1
Signal sensor
photo-receiving PCB
Blue
CN4-2
-3
Yellow
5V
3
1
Paper lead edge sensor
photo-receiving PCB
5
Double feed detected sensor
photo-emitting PCB
Double feed detection sensor
photo-emitting PCB
Paper lead edge sensor
photo-receiving PCB
Paper lead edge sensor
photo-emitting PCB