Original Size Detection In Platen Mode - Ricoh D009 Service Manual

Magnification in the sub-scan direction can be adjusted by changing the ADF motor
speed using SP6-017. In the main scan direction, it can be adjusted with SP2-102,
like for book mode.

6.4.3 ORIGINAL SIZE DETECTION IN PLATEN MODE

The original width sensors [A] detect the original width, and the original length sensors [B]
detect the original length. These reflective photo sensors are referred to collectively as the
APS (Auto Paper Select) sensors.
While the power is on, these sensors are active and the original size data is always sent to
the CPU. However, the CPU checks the data only when the platen cover sensor [C] is
activated after the platen reaches about 15 cm above the exposure glass as it is closed. The
main CPU detects the original size by the on/off signals received from the APS sensors.
If the copy is made with the platen fully open, the main CPU determines the original
size from the sensor outputs after the Start
In the diagram, 'MS' means monochrome scanner, and 'CS' means color scanner.
SM
key is pressed.
6-13
Scanning
D009/D011/D012/D013