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Punch Unit B531 (Option)
Punch Unit Drive
The punch unit makes 2 or 3 holes at the trailing edge of the paper. The number of holes depends on a
selection made on the operation panel.
• The cam [A] has 2 punches on one side and 3 punches on the other, and is turned by the punch
motor [B].
• The punch motor turns on immediately after the trailing edge of the paper passes the entrance
sensor. The punches on the cam rotate downward and punch holes in the paper.
• After punching a sheet of paper, the cam returns to home position and stops.
• Home position depends on whether 2 holes or 3 holes are being made, so there are two punch HP
sensors.
• Punch HP sensor 1 [C] is used when 2-hole punching is selected, and punch HP sensor 2 [D] is
used when 3-hole punching is selected.
• When the cut-out [E] enters the slot of the punch HP in use (sensor 1 or 2-hole punching or sensor 2
for 3/4-hole punching) the motor stops.
• The knob (not shown) on the front end of the punch unit can be turned in either direction to clear
paper jammed in the punch unit.
Punch Unit B531 (Option)
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