Duplo Duprinter DP-43S - Function of Parts; Press Roller (P Roll) Sensor

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b Press Section
chap.2
(1) Press Roller (P Roll) Sensor
The P roll sensor detects up and down of the press roller.
The press roller only ascends when the paper is fed from the paper feed section by the pinch lever. The P roll
sensor also is used to know whether the paper is fed.
Operation
The P roll sensor position varies depending on the press roller position as follows:-
• When the press roller is OFF (DOWN) : photointerrupting
• When the press roller is ON (UP) : photopassing
Press roller : OFF Press roller : ON
Drum
Pinch lever
Press roller
Press lever
P roll senser(PS8)
: photopassing
Press roller
Press lever
P roll senser(PS8)
: photointerrupting
Drum
Pinch lever
Circuit
2. Function of Parts