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PTM 2-5 B070/B071
2.1.5 ORIGINAL SIZE DETECTION
The ADF 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.
Original Width Sensor Location
Detectable Paper Sizes
Please refer to the “1.2 ADF” table in “Specifications”.
B070D921.WMF
DLT/LT LEF
A3/A4 LEF
A4 SEF
B4/B5 LEF
B070D922.WMF
[E]
[G]
[D]
[A]
[F]
[C]
[B]