Registration; Cutting Mechanism - Ricoh Aficio 480W Dolphin-C2 Service Manual

PAPER FEED AND REGISTRATION 28 April 2005

6.7.6 REGISTRATION

The registration motor [A] and registration
clutch [B] drive the registration roller [C].
[B]
When the paper arrives at the registration
roller, the registration clutch switches off
temporarily in order to remove any skew,
and then switches on again to resume
[C]
feed.
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[A]

6.7.7 CUTTING MECHANISM

[A]
There is a cutter unit on each roll tray.
The rotary disk cutter [A] can cut in either
direction. When it comes to rest at the
home position [B] on either end of the
cutting unit, a cam opens the paper holder
for the next paper feed.
Before cutting, the registration roller
continues to rotate at normal speed, but
the roll feed motor speed increases
[B]
slightly. This causes the paper to buckle
slightly between the registration roller and
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the top of the cutter.
When the cutter motor switches on, the
cutter starts to move. This closes the paper
clamp to hold the paper at the cutting
position. The cutter disk pushes the paper
against a horizontal blade behind the
paper, and moves across the paper, cutting as it moves.
The registration roller continues to turn during cutting. At this time, the slack
generated between registration roller and cutter is taken up. This allows paper feed
past the drum to continue at the same speed during cutting.
To cut a sheet from a roll of freshly loaded paper, press the auto feed key for the
each roll to feed paper, then release the key to cut. Paper will continue to feed for
as long as the auto feed key is pressed.
The paper can also be cut by pushing the handle on the cutter to the left or right.
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