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2-Hole, 3-Hole Type - To make two holes, the punching operation for the first
sheet ends when the punch shaft rotates 180 degrees (half-circumference) and the
Punch Home Position Sensor activates. At this time, the 3-hole punch rotates
once on a half-circumference of the punch shaft. The punching operation for the
second sheet ends when the punch shaft rotates 180 degrees counterclockwise
and the Punch Home Position Sensor activates (half-circumference). At this time,
the 3-hole punch then releases itself from the punch process on the other half
circumference of the punch shaft.
Punch Shaft At Rest
(Home Position)
Finisher Punch Transfer Operation
The Finisher Punch Transfer Motor provides horizontal registration for the punch
slide unit. The Finisher Punch Transfer Home Position Sensor detects the home
position of the punch slide unit. The punch slide unit detects the trailing edge of
sheets with the trailing edge sensor (LED5, PT5) and the horizontal registration
sensors (LED1 through 4, SREG1 through 4). This action moves the unit to the
desired position matching the trailing edge of each sheet (in relation to the size of the
sheet).
The horizontal registration operation takes place as follows:
1.
When the trailing edge sensor (LED5, PT5) detects the leading edge of a sheet
from the printer, the Finisher Punch Transfer Motor begins to move the punch
slide unit toward the front.
2.
When the horizontal registration sensor (LED1 through 4 for the appropriate the
paper size from the printer) detects the leading edge of the sheet, the Finisher
Punch Transfer Motor moves to the specified position then stops the slide unit.
3.
When the trailing edge sensor (LED5, PT5) detects the trailing edge of the sheet,
the drive of the Feed Motor stops, also stopping the sheet. Then, the Finisher
Punch Motor energizes to punch holes in the sheet.
2-16
Punch Shaft CCW
Rotation By 90
(Punch At Upper Limit)
Phaser 7400 Color Printer Options Service Manual
Punch Shaft CCW
Rotation By 180
(Punch Back To Initial Position)
s7400-154
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