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Title:
PUNCHING UNIT, POST-TREATMENT DEVICE, AND IMAGE FORMING SYSTEM
Document Type and Number:
Japanese Patent JP2012179684
Kind Code:
A
Abstract:

To provide a punching unit having one driving source without cutting off the driving force of the driving source, and to provide a post-treatment device and an image forming system.

The punching unit 41 includes a bottom plate 76 as a first paper passing guide, a top plate 93 as a second paper passing guide, a plurality of punches 63A-63D, engaging projection parts 95A-95F, a first transmission member 64, a second transmission member 65, the driving source, and a rack-pinion mechanism 67. In the punching unit 41, the rotating force of the driving source on a rotary driving shaft 66a is converted into linear motion by the rack-pinion mechanism 67 to move the first transmission member 64 and the second transmission member 65 in opposite directions, to drive the punches 63A-63D of a first punching group or the punches 63B, 63C of a second punching group in the axial direction.


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Inventors:
KIRYU TOMOHIKO
Application Number:
JP2011044800A
Publication Date:
September 20, 2012
Filing Date:
March 02, 2011
Export Citation:
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Assignee:
KONICA MINOLTA BUSINESS TECH
International Classes:
B26F1/04; B65H37/04
Domestic Patent References:
JP2001198889A2001-07-24
JP2008137100A2008-06-19
JP2003001597A2003-01-08
JP2004026350A2004-01-29
Attorney, Agent or Firm:
Shinto International Patent Office