Ricoh G108 - Mechanism; Paper Size; Paper Size and Paper Tray Detection

PAPER TRAY UNIT
G108 6-34 SM
6.7.4 PAPER SIZE AND PAPER TRAY DETECTION
Mechanism
A printed circuit board [E] located at the rear end of the left paper-tray rail is
comprised of four photosensors. Three photosensors on the front side [A][B][C] are
the paper size sensors. The remaining sensor is the paper tray sensor [D]. The
paper size sensors detect the paper size in the paper tray. The paper tray sensor
detects the paper tray (tray is set correctly).
An interrupter [H] that is attached to the front plate [F] interrupts (blocks) the paper
size sensors. This interrupter has an opening [I], and can interrupt up to two
sensors at one time.
The paper tray has one more interrupter [G] located on its rear left corner. This
interrupter blocks the paper tray sensor. If the paper tray is correctly set in the
printer, the paper tray sensor is actuated (blocked).
Paper Size
The table lists the sensor patterns and detected paper sizes.
Paper Size Sensor
Paper Tray
Sensor
[A] [B] [C] [D]
Paper Size
Not interrupted Not interrupted Not interrupted Interrupted DL/#10
Interrupted Not interrupted Not interrupted Interrupted B5
Not interrupted Interrupted Not interrupted Interrupted Executive
Interrupted Not interrupted Interrupted Interrupted Letter
Interrupted Interrupted Not interrupted Interrupted A4
Not interrupted Not interrupted Interrupted Interrupted Legal*
* Optional legal-size tray
G108D923.WMF
[A]
[B]
[C]
[D]
[H] [G]
[E]
[F]
[I]