Paper Lifting Motion - Konica Minolta Bizhub 501 Service Manual

5. OPERATIONS
5.1.2

Paper lifting motion

• When the Tray is slid into the main body and the Tray Set Sensor /3, /4 (PS112, PS121) is
activated, the Paper Lift Motor /3, /4 (M124, M125) starts rotating to raise the Lifting Plate
[3].
• The paper stack of the Tray pushes up the Pick-up Roller [1]. When the upper limit position
is detected by the Upper Limit Sensor /3, /4 (PS114, PS123) [4], it stops raising the lifting
plate.
• As paper is consumed during the print cycle and the Pick-up Roller is lowered, M124, M125
is energized until PS114, PS123 is blocked again.
A. When the Tray is slid in
1. The lifting plate [3] goes up and the top surface of the paper stack pushes up the roller
[1].
2. The lifting motion stops as soon as the Upper Limit Sensor /3, /4 (PS114, PS123)
detects the upper limit position.
[4]
[1] Pick-up Roller
[2] Lift-up Arm
B. During a print cycle
1. As the paper is consumed, the Upper Limit Sensor /3, /4 (PS114, PS123) [1] is
unblocked.
2. The lifting plate goes up.
[1]
[1] Upper Limit Sensor /3, /4 (PS114, PS123)
6
Theory of Operation Ver.1.0 May. 2008
[3] [2]
[3] Lifting Plate
[4] Upper Limit Sensor /3, /4 (PS114, PS123)
[1]
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