Punch Section; Punch Mechanism - Konica Minolta Bizhub 501 Service Manual

5. OPERATION
5.4

Punch section

5.4.1

Punch mechanism

• For the punch, a hole is punched on the rear side of paper for each paper.
• The driving force from the punch motor (M11) [5] is transmitted to the eccentric cam [6] by the punch clutch
(CL1) [4]. And when the eccentric cam makes a full turn, the cam holder [3] makes a round trip to punch a
hole.
• The position of the reciprocating operation of the punch is detected by the punch encoder sensor (PS15).
[5]
[4]
[3]
[1] Entrance roller
[2] Punch blade
[3] Cam holder
A. Operation
1.
A specified period of time after the path sensor (PS2) of the RU detects the trailing edge of paper, the con-
veyance motor /Up (M4) or conveyance motor /Lw (M2) turns OFF to stop at the prescribed punch position.
2.
The punch clutch (CL1) turns ON to punch a hole.
3.
M4 or M2 turns ON to convey paper.
26
Theory of Operation Ver.1.0 May. 2008
[6]
[2]
[4] Punch clutch (CL1)
[5] Punch motor (M11)
[6] Eccentric cam
[1]
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