Theory of Operation 2-25
Paper Pick for Tray 1
To pick a sheet of paper, the Tray 1 solenoid is fired, and the drive gear rotates slightly
to engage with the drive train. A bias force from the lift plate against a rotating cam
causes the roller to rotate enough so the missing tooth gear engages the drive train.
This allows the lift plate and paper stack to rotate against the pick roller. The pick
roller then rotates to pick the paper. A separator pad assembly prevents multiple
sheets from being picked by the pick roller.
Key differences in the Tray 1 pick process include:
â– Optimized lift plate force to support heavier paper.
â– 100-sheet capacity.
â– Pick roller to create the buckle for the deskew process.
â– Pick roller drive to disengage when the door is opened and closed.
â– Pivoting separator pad to prevent it from binding.
s8500-024
Spring Loaded Lift Plate
Cam
Drive Gear
Pick Roller
Separator Pad
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