Title:
PUNCHING DEVICE, SHEET PROCESSING DEVICE AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2015223648
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a punching device which reduces the number of components and makes a punching member movable in a punching direction while rotating the punching member, and to provide a sheet processing device and an image forming apparatus including the punching device.SOLUTION: A punching device 3 sets a transmission part to be driven of a punching member such as a punching pin 310 as a spiral groove part 309. Further, a driving transmission part for transmitting a driving force to the transmission part to be driven of the punching member formed on a sliding member such as a slide arm 322 which performs sliding movement in parallel to a sheet surface is set as a contact part such as inclined straight line projection parts 322b which is brought into contact with the spiral groove part 309. Therein, an inclination angle β for a sheet surface of a spiral part is set to be less than an inclination angle α for a sheet surface of the contact part and the punching member is moved in the orthogonal direction for the sheet surface while rotating the punching member on the basis of a relationship of the contact part and the spiral part in accordance with a sliding movement of the sliding member.
Inventors:
HAYASHIMA NARUTAKA
NAKANE TAKUJI
FUJIE HIROSHI
NAKANE TAKUJI
FUJIE HIROSHI
Application Number:
JP2014109038A
Publication Date:
December 14, 2015
Filing Date:
May 27, 2014
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
B26D5/08; B26D5/16; B26F1/14; B65H37/04; G03G15/00
Domestic Patent References:
| JP2012101303A | 2012-05-31 | |||
| JP2014058019A | 2014-04-03 | |||
| JP2001009791A | 2001-01-16 | |||
| JP2012228770A | 2012-11-22 | |||
| JPH065889U | 1994-01-25 | |||
| JP2013166195A | 2013-08-29 |
Foreign References:
| US20120325062A1 | 2012-12-27 |
Attorney, Agent or Firm:
Toshi Kuroda