Document Size Detection Mechanism; Raised/Lowered Position Detection Mechanism - Konica Minolta bizhub 169 Service Manual

Theory of Operation Ver. 1.0 Apr. 2007
2.3.5

Document Size Detection Mechanism

• The document size is determined by means of two different systems of document width
detection and document length detection.
A. Document Width Detection
• The width of an original is detected by the combination of Paper Width Sensors as
detected while the original is being taken up.
• Each sensor is located as follows with reference to the Document Edge Guide in the rear.
B. Document Length Detection
• The length of the original is detected by the Paper Length Sensor when the document is
loaded in the unit.
• The Paper Length Sensor is located at the Document Loading Tray.
2.3.6

Raised/Lowered Position Detection Mechanism

• There is a magnet installed in the ADF body to allow the copier to know that the ADF is
raised or lowered.
• This magnet actuates the Original cover set switch on the copier.
Original cover set switch (S6)
2. Automatic Document Feeder (DF-502)
Magnet
4688C509AA
9