Konica Minolta bizhub 211, Service Manual

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Theory of Operation Ver. 1.0 Apr. 2007 16. Paper feed
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Composition/Operation
16.3 Operation
16.3.1 Paper Separating Mechanism
• The coefficient of friction between the Feed Roller and Separation Roller is effectively
used to prevent double feed of paper.
When one sheet of paper is taken up:
The coefficient of friction on the front side of the sheet of paper taken up and fed through
the space between the Feed Roller and Separation Roller is the same as that on the back-
side of the sheet of paper, allowing the paper to be properly fed into the machine.
When two or more sheets of paper are taken up:
The coefficient of friction between the paper and the Separation Roller is greater than that
between the sheets of paper, which allows only the top sheet of paper to be fed into the
machine.
16.3.2 Drawer in Position Detection
• When the drawer is slid into the copier, the light blocking plate blocks the Set Sensor.
The copier then knows that the drawer has been slid in position.
A08EC535AA
Feed Roller
Paper
Separation Roller
A08EC536AA
Tray set sensor (PS5)