Operation; Document Pick-Up And Feed - Konica Minolta bizhub 169 Service Manual

Theory of Operation Ver. 1.0 Apr. 2007
2.3

Operation

2.3.1

Document Pick-Up and Feed

• The document is taken up as the Pick-Up Roller and Feed Roller turn.
• The Pick-Up Roller transports the document up to the Feed Roller.
• After a scan is completed, the Main Motor is turned backward to raise the Pick-Up Roller.
• The Pick-Up Roller and the Feed Roller are turned through the Paper Feed Clutch and by
a gear train and a belt driven by the Main Motor.
• The Paper Empty Sensor is used to detect a document loaded on the Document Loading
Tray.
• The Document Stoppers determine the leading edge position of the document loaded on
the Document Loading Tray. They are in the lowered, swung-down position in the
standby state and swing upward when the document is to be taken up.
• The swing-up and swing-down motion of the Document Stoppers is operatively con-
nected to the raising and lowering of the Pick-Up Roller.
Paper feed clutch (CL1)
Paper empty sensor (PS2)
2. Automatic Document Feeder (DF-502)
Main motor (M1)
Feed Roller
Document Stoppers
Pick-Up Roller
4688C504AA
5