Punch Mechanism; Punch Status Detection - Konica Minolta bizhub 500 Service Manual

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Theory of Operation Ver. 1.0 Feb. 2006

Punch mechanism

• After a given period of time after the Entrance Sensor (PS4) [3] has detected the trailing

edge of the paper, the Conveyance Motor (M2) of FS is deenergized and a punch hole oper-

ation is made at the trailing edge portion in each sheet of paper.

• Punch holes are made when the slide cam [1] makes a reciprocating motion, as driven by

the drive cam which is rotated by the Punch Motor (M1) [2] provided in the punch unit.

[1] Slide Cam

[2] Punch Motor (M1)

• The punch status is detected by using the Punch Position Sensor /1 (PS2) [1], /2 (PS3) [2],

Punch Home Sensor, and the Encoder Sensor (PS4) [3].

[1] Punch Position Sensor /1 (PS2)

[2] Punch Position Sensor /2 (PS3)

[3] Entrance Sensor (PS4)

[3] Encoder Sensor (PS4)

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