500-Sheet
Finisher
G302/B442
DETAILED SECTION DESCRIPTIONS
SM 18-15 G302/B442
Output tray up/down mechanism
Overview
The output tray motor [A] lifts/lowers the tray if the stack height is not at the target
position.
Gears [B] and [C] keep the angle of the tray constant at any tray position.
Output Tray Downward Movement
The top of the paper stack is checked after every page (or set of pages) has been
fed out. If the top of the stack is higher than the target level, the output tray motor
moves the tray down.
When the stack near-limit sensor [D] detects the actuator on gear [C], a stack near-
limit signal is transferred to the main frame. The tray cannot move any lower. The
next time the top of the stack height is above the target level, printing stops.
Output Tray Upward Movement
If paper is removed from the stack, the top of the stack will be lower than the target
level, and the output tray motor moves the tray up.
When the tray upper limit sensor [E] detects the actuator on gear [B], the tray
cannot be moved up any more, so the motor stops.
B442D105.WMF
[A]
[C]
[D]
[E]
[B]
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