Ricoh FT4460, Service Manual, Page: 122 / 413

28 February 1989
9.10 PAPER FEED TIMING
Each paper feed clutch start timing is almost the same (T1). Paper feed
begins 0.1 seconds after the Start key is pressed. When the leading edge of
the paper triggers the registration sensor (T2), the first and second paper
feed clutches are turned OFF 0.07 seconds later. This buckles the paper in
order to correct skewing. The third paper feed clutch will be turned off as
soon as the leading edge of the copy paper is detected by the upper relay
sensor. The relay clutch will drive the paper to the registration roller to create
the buckle for paper fed from the 3rd paper feed station.
After lead edge occurs*, the registration clutch is turned ON (T3) 0.7 seconds
later to feed the paper to the copying unit.
*After detection of the front end of the original (front of the
original scale).
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