Pick-Up And Separation - Ricoh Di-C1 Manual

Pick-up and Separation

Feed
Clutch
Feed
Belt
Pick-up solenoid: Lifts the original table, to lift the originals
to the pick-up roller
Feed motor: Controls the rollers
Feed clutch: Controls the pick-up roller and feed belt
Slide 270
Main points about the mechanism
The feed motor has two speeds. It feeds the first original to the glass
quickly, but is slower for scanning (the speed during scanning is set by
the reproduction ratio).
The original sensor detects the trailing edge of the last original, before
the original set sensor does.
The original set sensor detects if an original is in the feeder. Why not use
that sensor? Why is one more sensor necessary?
In this machine, the copier feeds copy paper into the machine first, to
increase the copy speed. The original sensor tells the copier that there
are no more pages to be scanned. The copier can then stop paper feed.
Look at the component diagram. The original set sensor is near the
scan line, to tell the cpu that an original is in the feeder and is ready to
be scanned. This is too far into the machine to tell the cpu sufficiently
early to stop the next sheet of copy paper.
The original sensor is much nearer to the trailing edge of the stack. This
gives sufficient warning to the cpu when the last page of the original is
fed in.
Feed Motor
D366 Service Manual, Detailed Section Descriptions,
Basic Operation, Pick-up and Separation
270
Di-C1 Training
Pick-up
Roller
Separation
Roller