Tray2 Paper Lifting Motion Control - Develop QC 2235 Plus Service Manual

QC 2235plus Theory of Operation Ver.1.0 Mar. 2004
12.3.8

Tray2 paper lifting motion control

A. When Tray2 is slid in
• The paper lifting motion is started if the Tray2 Lift-up Sensor is unblocked with Tray2 slid
in the machine.
• When the Tray2 Lift-up Sensor is blocked after the paper lifting motion has been started,
the motor is deenergized.
Tray2 Lift-up Motor (M101)
Tray2 Set Sensor (PC103)
Tray2 Lift-up Sensor (PC105)
Tray2 Lift-up Motor (M101)
B. During a copy cycle
• As paper is consumed, the Paper Take-up Roller gradually lowers to unblock the Tray2
Lift-up Sensor. The Tray2 Lift-up Motor is then energized again to lift the paper stack.
When the Tray2 Lift-up Sensor is then blocked, the Tray2 Lift-up Motor is deenergized.
• The sequence of these operations is repeated to keep constant the pressure between
the Paper Take-up Roller and paper stack (paper take-up pressure) regardless of the
amount of paper still available for use.
Paper Lifting Plate
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Tray2 Slid in
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2-61
Paper feed section
Tray2 Lift-up Sensor (PC105)
Lifting Completed
Tray2 Lift-up Sensor (PC105)
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