11.2 Operation; Folding Knife Control - Konica Minolta bizhub c650 Service Manual

11. Folding/saddle stitching/tri-folding (FS-608)

11.2 Operation

11.2.1

Folding knife control

• The folding knife motor drives the folding knife.
• The folding knife is used in the folding/saddle stitching/tri-folding mode.
• In the tri-folding mode, it is used at the 1st folding.
A. Folding knife operation
• The folding knife motor rotates the crank shaft a half turn via the gear and pushes the
paper [2] to the nip section with the folding knife [5].
• The folding rollers [4] draw and fold the paper.
• The position of the saddle stitching stopper [6] controls the folding position.
[1] Folding knife home sensor (PS22)
[2] Paper
[3] Folding pass-through sensor (PS26)
B. Folding knife control
• The folding knife motor turns ON and sticks out the folding knife to the paper after a spec-
ified period of time since the folding passage sensor [3] detects the paper and the saddle
stitching stopper stops at the folding position.
• The folding knife motor stops when the folding knife reciprocates and the folding knife
home sensor [1] turns OFF.
64
[4]
[5]
[2]
[3]
[6]
Theory of Operation Ver. 5.0 May 2008
[1]
[4] Folding roller
[5] Folding knife
[6] Saddle stitching stopper
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