Oce 3121 Technical & Service Manual page 488

Timing of operations
Cassette 1, A4, 2 Copies, Continuous
I
Sequence of pick-up operations (cassette)
Operation of the ramp in the cassette
When the cassette is in use, the ramp is raised continuously, so maintaining the
height of the top sheet in the cassette.
Movement of the ramp during the copying cycle
The level of the paper is maintained as follows:
The movement of the ramp is started when the shaft of the pick-up roller re-
I
leases the trigger and releases the cam.
The movement of the ramp stops when there is no paper in the cassette.
I
As copy paper is used, the pick-up roller is gradually lowered.
1
Pick-up rollers
feeding motor
ramp
Paper
trigger
ed.1
shaft of the pick-up roller
pick-up opening
12 Paper trays 507