Gestetner A294, Service Manual

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DOCUMENT FEEDER
SM 2-5 A294/A295
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2.1.5 ORIGINAL SIZE DETECTION
The DF detects the original size by combining the readings of original length
sensor [A], and original width sensors-1 [B], -2 [C], and -3 [D].
Original Length
The original length sensor and the disk [E] (connected to the transport roller)
generate a pulse signal. The CPU counts pulses, starting when the leading edge of
the original turns on the registration sensor [F], until the trailing edge of the original
turns off the entrance sensor [G].
Original Width
The CPU detects original width using three original width sensors -1, -2, -3 as
shown above. Three small circles on the diagram indicate the positions of the
sensors.
B301D104.WMF
B301D503.WMF
[E]
[G]
[D]
[A]
[F]
[C]
[B]
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA