Canon Finisher-AK1 Service Manual page 46

2
Technology > Saddle Stitcher Unit > Paper Feed Operation
Roller guide clearance control
2
In case of thin paper (under 62 g/m ) if the clearance between the roller guide and the saddle
process tray is too loose, the paper stack gets loose and the alignment operation does not
function properly. Thus, in case of thin paper mode, the machine makes the clearance [A]
between the roller guide and the saddle process tray tighter compared with the modes other
than thin paper. Also, the machine makes the clearance [A] larger when several sheets of
paper are transferred to the saddle process tray. The machine enlarges the clearance [A] by
the specified degree per 5 sheets of paper.
A
Gear
Slide rack
Shutter
shift block
Shutter
shift mount
Roller guide Saddle process tray
2 Technology > Saddle Stitcher Unit > Paper Feed Operation
Clearance [A] between the roller guide and the saddle process tray changes in accordance
with the position of shutter shift block (hereinafter called as shift block).
The roller guide motor (M104) lifts the shift block. Since the shift block contacts the shutter
shift mount at the first time, it moves with the constant clearance [A].
When it continues lifting, it reaches the edge of the shutter shift mount and the clearance [A]
is reduced as it moves. In thin paper mode, the machine lifts the shift block until the clearance
[A] becomes the specified degree, and then it lowers the shift block per 5 sheets to enlarge
the clearance [A].
A
Roller guide
motor (M104)
Slide rack
Saddle roller
guide HP sensor
(PS107)
Shutter
sift block
Shutter shift mount
F-2-50
Saddle process tray
Roller guide
2-31
Shutter
shift block
Shutter
shift mount
Slide rack
F-2-51
2-31