Paper Registration - Ricoh A219 Service Manual

10.4 PAPER REGISTRATION

[F] [E]
Main motor rotation is transmitted to the registration roller clutch gear [A]
through several gears and a timing belt. When the registration clutch [B] is
energized, the rotation of the clutch gear is transmitted to the lower
registration roller [C].
The registration sensor [D], which is positioned just before the registration
rollers, controls the relay roller clutch stop timing. The relay roller clutch stays
on for 130 milliseconds after the leading edge of the paper actuates the
registration sensor. The CPU then turns off the relay roller clutch. This delay
allows time for the paper to press against the registration rollers and buckle
slightly to correct skew.
The CPU energizes the registration clutch at the proper time to align the
paper with the image on the drum.
The registration sensor is also used for paper misfeed detection.
The paper dust mylar [E] on the upper registration roller [F] removes paper
dust before the paper reaches the transfer/separation unit.
SM
CÓPIA NÃO CONTROLADA
[D]
A219D523-2.wmf
2-45
CÓPIA NÃO CONTROLADA
PAPER FEED AND REGISTRATION
[A]
[C]
A219D529.wmf
[B]
A219