Punch Unit (Optional); Punch Drive Mechanism - Gestetner B003 Service Manual

PUNCH UNIT (OPTIONAL)

4.8 PUNCH UNIT (OPTIONAL)
The punch unit punches holes in printed sheets, one by one. The punch unit is
provided with a new punch mechanism to improve the accuracy of punching.
[A]
[E]
[D]
[C]
B352D116.WMF
[B]
[H]
[I]
B377D101.WMF
[F] [G]

4.8.1 PUNCH DRIVE MECHANISM

The punch drive mechanism is driven by the punch motor [A]. Each sheet is
positioned and punched by pressure from above. A certain time after the trailing
edge of the paper passes through the finisher entrance sensor [B], the punch
motor turns on and the paper stops. Then the punch clutch [C] turns on to make
the punch holes.
The home position is detected by the punch HP sensor [D]. When the cut-out in the
punch shaft disk [E] enters the punch HP sensor, the punch clutch turns off.
When the finisher has received the command that changes the number of punch
holes, the punch hole motor [F] turns on until the disk changes the status of the
punch hole switch [G] (until it switches on or off). This indicates that the cover [H]
and the punch cam [I] have moved to one side or the other to change the number
of holes.
SM 14-33 B003/B004/B006/B007