95
Ricoh Co. Ltd.
http://www.ricoh.com/
B245-62 / PD-C4
Slide 95
Paper Size Detection
–
By-pass Tray
Bypass paper size switch monitors paper width.
Side fences turn a gear wheel that contains sensor terminals.
Paper Size Switch
OFF
OFF
ON
ON
CN136-5
OFF
ON
ON
OFF
CN136-4
OFF
OFF
OFF
OFF
CN136-3 (GND)
ON/OFF
OFF
OFF
OFF
CN136-2
OFF
OFF
OFF
ON/OFF
CN136-1
A5 SEF
8"x13"
A4 SEF
A3
CN No. (BICU)
More on Paper Size Detection
The side guides contain ratchets that turn a gear wheel at the center of the
sensor. The gear wheel contains terminals. The output of the sensor changes
when the gear wheel rotates over the wiring patterns on the rectangular part of
the width sensor.
The bypass tray hardware only determines the paper width. The base copier
hardware determines the length.