Ricoh D391, Service Manual

Page: 451 / 490

S12 (INS) Lower Limit Sensor: Tray B CL2 (INS) Registration Clutch: Tray
S13 (INS) Registration Sensor: Tray B
Paper Feed and Transport
The section describes what happens during paper feed from Tray A (essentially the same as what happens
with Tray B).
• Lift to pre-feed position
• Feed drive selection
• Paper pickup and feed
• Skew correction at the registration roller
• Transport 1: Feed to standby position
• Transport 2: Feed into vertical path
• Next cover feed
Lift to Pre-Feed Position
With paper loaded in the tray when the inserter receives a job start command from the bookbinder, the lift
motor (M4 (INS)) for Tray A [1] turns on and raises the top tray until paper feed sensor (S4 (INS)) for Tray
A detects the top of the paper stack and signals to stop the motor. Next, lift motor (M4 (INS)) reverses for
a very brief time to lower the tray a short distance and then stops with the tray up and below the paper
feed position.
This function keeps the tray at the proper feed position so the paper can be easily changed if the paper
requested for the next job is different from the paper being used in the current job.
Inserter-C1 (D391)
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