Skew Correction - Ricoh D009 Service Manual

Basic Operation

2.2.4 SKEW CORRECTION

When an original is fed into the feeder, the feed motor [A] rotates forwards. At this time, the
feed belt turns but the skew correction roller [B] does not, because these rollers have a
one-way gear. (If the ADF feed motor rotates forward, the feed belt is moved. If the ADF
feed motor rotates in reverse, the skew correction roller is moved.) As a result, when the
leading edge of the paper gets to the skew correction roller, skew in the original is removed.
A short time after the leading edge of the original turns on the skew correction sensor [C],
the feed motor [A] turns off and rotates in reverse. At this time, the skew correction roller [B]
and the feed belt [D] both turn, and original feed continues.
The registration roller also has the same skew correction mechanism, but only for small
size originals (6, A5 or HLT). This function can be effective for all size paper with
SP6-020-001.
SM 27 B802