Ricoh SAVIN D0AP Service Manual page 629

Bypass Paper Feed Operation
Paper Feed and Bottom Plate Operation
When the paper feed signal is issued for the bypass tray, the bypass lift clutch (CL3) [A] starts to
rotate and raises the bottom plate [B].
Next, the bypass feed clutch (CL4) [C] switches on and rotates the bypass feed roller [D]. At the
top of the paper stack in the bypass tray, the top sheet separates at the friction pad [E] and
feeds into the machine toward the registration roller.
When the leading edge of the paper turns on the registration sensor (S5), this switches the
bypass feed clutch (CL4) off. Image position timing takes over and positions the paper for
image transfer. The registration clutch (CL5) switches on and the paper feeds to the transfer
unit.
The bypass tray bottom plate [B] is raised and lowered by the cam [F] attached to the shaft
rotated by the bypass lift clutch. The friction pad [E] is linked to the bottom tray so it also rises to
maintain contact with the bypass feed roller to effect paper separation at the top of the stack.
The feeler of the bypass tray sensor (S3) [G] attached to the cam switches on and off to detect
the position of the tray as it moves up and down.
ON (sensor gap open): Bottom plate down
•
• OFF (sensor gap blocked): Bottom plate up
SM 7-67 D0AP/D0C4/D0C5/D0C6/M0BQ/M0D1
Paper Feed