Gestetner B147, Service Manual

Page: 789 / 1081

PUNCH UNIT (OPTIONAL)
SM 69 B602
Bookle
t
Finisher
B602
Two or Three Holes
There are five punches. When the finisher punches holes, the punch drives all
punches at the same time. But three of them do not reach the paper (when the
finisher is punching two holes), or two of them do not reach the paper (when the
finisher is punching three holes).
Phase 1
Standby
Working
Working punches operate as
follows:
1) The punch is in the home
position. The punch home
position sensor [A] is on. When
the first sheet of paper is set, the
punch cam starts a forward turn.
2) When the punch cam has made a
180-degree turn, a hole is
punched.
3) When the punch cam has made a
180-degree turn, the punch
comes back to the home position.
Note that the punch cam [B] is not
in the previous position.
Standby punches operate as
follows:
1) When the first sheet of paper is
set, the punch cam starts a
forward turn.
2) When the punch cam has made a
90-degree turn, the punch is away
from the paper.
3) When the punch cam has made a
180-degree turn, the punch is
back to the home position.
B602D945.WMF
B602D946.WMF
1) 2) 3)
1) 2) 3)
[A]
[B]