Ricoh C211 Service Manual page 495

IMAGE SHIFTING SECTION
1.
Overall
The image
ward using
The image
feed timing
on the printing paper can be shifted 20 millimeters either backwards or for-
the Image Shift keys on the operation panel.
position is adjusted by the image shifting motor which changes the paper
by turning the first paper feed roller and second feed roller rotation cams.
2. Image Shifting Mechanism
P \ \
&
[K]
[N]
When the forward key (+ key = ~ ) is pressed, the image shifting motor [A] turns
clockwise (in the direction of the arrow) and drives cam gear [J] clockwise through gears
[B], [cl, [D], [E], [F],
[G]
and [H] as illustrated on the next page.
The cam gear [J] has a spiral track which the lever [K] moves along. When the cam
gear turns clockwise, the pin of the lever [K] moves towards the outside of the cam gear
[J]. Therefore, the lever [K] moves
clockwise.
The lever [K] drives the gear [0] clockwise through the gear [N] and the first paper feed
roller and second feed roller rotation cams mounted on the shaft of the gear [P] turn
clockwise. As a result, the paper feed start timing is delayed compared with drum rota-
tion timing and the image position is moved in the forward direction.
When the cam gear [J] turns, the gear [1] located behind the gear ~ [J] turns and the en-
coder [M] mounted on the gear [L] turns to check the image shifting position.
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