HP (Hewlett-Packard) 9055 Printer User Manual


 
36 Finisher unit explanation ENWW
Main tray section
Composition
Mechanism
*1 Main tray up/down
The tray up/down motor (M703) and the
worm gear installed on the motor shaft
perform the winding operation of the
up/down wire. The rotation direction of
the motor shaft determines the moving
direction of the main tray (that is, the
rise or fall). If the up/down pulley/L
rotates clockwise seen from the front,
the main tray rises. Otherwise, the main
tray falls.
*2 Paper detection
The distance between the top surface of
the piled sheets on the main tray (the
top surface of the main tray if there's no
sheet on the tray) and the paper exit
opening is monitored using the tray
upper limit PS (PS702) and the stapler
paper exit upper limit PS (PS707). This
distance is kept constant to avoid
misalignment of delivered sheets.
The counting program, built in the
finisher, counts the number of delivered
sheets on the main tray during
continuous copying. When the total
number of delivered sheets reaches a
maximum (values are predefined
depending on type/size of paper), the
copying operation is suspended.
Main tray
Upper up/down pulley
Up/down pulley/L
Stapler paper exit upper limit PS
(PS707)
Tray upper limit PS (PS702)
Counter reset PS (PS715)
Tray lower limit PS (PS703)
Tray up/down motor (M703)
Mechanism Method
Main tray up/down*1 Wire drive
paper detection*2 Photo sensor