Canon Saddle Finisher-T2 Service Manual page 83

a staple sensor (SW6, SW4) for detection of the presence/absence of staples.
The stitcher base is designed so that it may be drawn out to the front from the saddle stitcher for replacement of the
staple cartridge or removal of a staple jam. The stitcher unit in sensor (PI16) is used to make sure that the stitcher
base is properly fitted to the saddle stitcher.
Safety switches are not mounted for the stitcher unit (front, rear), as the location does not allow access by the user.
Stitcher (rear)
Stitcher (front)
Stack
F-2-76