Konica Minolta AFR-12 General, Mechanical/Electrical page 28

1.10 Miscellaneous
1.10.1 Document Size Detection Mechanism
1. Width Detection
The width of the document is detected by the sensor located on the Size
Sensor (PWB-C).
The sensor is turned ON and OFF by actuator located at points approx. 268
mm respectively, from the Rear Document Guide.
2. Length Detection
The length of the document is detected by the number of pulses generated
by the Transport Motor (M2) for the period in which the Registration Roller
starts turning and the trailing edge of the document passes the Registration
Sensor (PWB-B).
1.10.2 Raised/Lowered Position Detecting Mechanism
DF Set Switch is located at the front left corner of the copier and a magnet
catch is mounted on the front left of the ADF. The position of the ADF,
whether raised or lowered, can be detected as the reed switch is turned ON
and OFF by the magnet catch.
Opening/closing the ADF serves to reset a misfeed condition and allows
selection of a Test Mode operation.
1.10.3
Rev. 1.0/05.99 M-25 AFR-12/AF-5