Paper Registration - Ricoh FT6645 Manual

23 April 1993 PAPER FEED

6.16 PAPER REGISTRATION

[A]
[B]
The registration rollers [A] have two functions. One is aligning the lead edge
of the paper with the leading edge of the latent image on the OPC drum.
When the CPU receives the signal from the registration sensor, the
registration clutch turns on. It turns off 90ms after the trailing edge of the
paper is detected by the registration sensor.
The other function is to correct skewing of paper fed from the trays. When the
leading edge of the paper reaches the registration rollers, the vertical
transport rollers [B] continuously turn to transport the paper. On the other
hand, the registration roller is not turning. The leading edge of the paper is
pushed against the registration roller. This makes a little buckle on the paper
between the vertical transport rollers and the registration rollers to correct
paper skew.
Shortly after the leading edge of the paper reaches the registration roller, the
registration clutch activates to feed the paper.
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