Canon Puncher Unit-L1, Service Manual

Page: 28 / 92

Chapter 2
2-6
reciprocally in the escape direction (hole puncher rise direction) on the remaining half peripheral area on the punch
shaft. To punch three holes, the 2-hole puncher is moved reciprocally in the escape direction (hole puncher rise
direction).
The following illustrates punching when two sheets are punched with two holes.
1) A hole is punched in the trailing edge of the first sheet.
F-2-5
When two holes are punched, the 3-hole puncher is fed reciprocally in the escape direction (hole puncher rise
direction) as shown below.
F-2-6
2) A hole is punched in the trailing edge of the second sheet.
[punch shaft stopped/
home position] [punch shaft is rotated 90˚
in the forward direction/
hole punched] [punch shaft is rotated 180˚
in the forward direction/
punch operation completed]
Sensor flag
Punch home
position
sensor (PI63)
Punch shaft
Eccentric
cam
Hole
puncher
Die
Die
Sheet
Punched scrap
[punch shaft stopped/
home position] [punch shaft is rotated 90˚
in the forward direction/
hole puncher rises to
topmost position] [punch shaft is rotated 180˚
in the forward direction/
hole puncher returns to
original position]