Mechanical Operations; Vertical Transport Drive Mechanism - Develop QC 2235 Plus Service Manual

QC 2235plus Theory of Operation Ver.1.0 Mar. 2004
3.

Mechanical operations

3.1

Vertical transport drive mechanism

• The Paper Feed Motor drives the Pick-up Roller and Paper Take-up Roller to take up and
feed a sheet of paper into the main unit.
• Then, the Transport Roller Motor transports the paper through the vertical transport sec-
tion.
• The Pick-up Roller takes up sheets of paper and the Paper Take-up and Separation Roll-
ers ensure that only one sheet of paper is separated and fed into the main unit.
• When the drawer is slid in, the lever is pushed to lower the Pick-up Roller.
• The Tray Upper Limit Sensor then detects the upper limit position when the paper lifting
plate is raised.
• The Upper Paper Empty Sensor detects when paper in the drawer runs out.
Paper Feed Motor
(M122-PF, M123-PF)
Lever Pick-up Roller
Feed Roller
Pick-up Roller Home Position
Transport Roller Motor
(M120-PF, M121-PF)
Tray Upper Limit Sensor
(PC114-PF, PC123-PF)
Separation Roller
2-3
Mechanical operations
Upper Paper Empty Sensor
(PC115-PF, PC124-PF)
Actuator
Pick-up Roller Feed Position