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15 July 1996
DUPLEX
8.5 DUPLEX PICK-UP ROLLER MECHANISM
[D]
[A]
[C]
A176D636.wmf
[B]
[A]
[E]
[C]
A176D637.wmf
The positioning roller [A] is basically in the upper position. 150 ms after the
duplex transport sensor [B] detects the trailing edge of the paper (ON →
OFF), the positioning solenoid [C] turns on to lower the positioning roller until
it contacts the paper. The positioning roller continuously rotates clockwise
while the fusing/duplex motor [D] rotates. The positioning solenoid turns on
until the leading edge of the paper hits the separation belts [E].
30 ms after the duplex transport sensor [B] detects the leading edge (OFF →
ON) of the next paper, the positioning roller solenoid turns off to raise the
positioning roller so that the positioning roller does not disturb the next paper
as it enters.
2-105
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