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Title:
BORING DEVICE, IMAGE FORMATION SYSTEM
Document Type and Number:
Japanese Patent JP2015123522
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a boring device capable of boring cleanly for improving boring quality, and to provide an image formation system equipped with the same.SOLUTION: A boring device includes a boring pin 100 which is driven by driving means to reciprocate in a predetermined direction for boring on a sheet material. At an outer peripheral part on the boring pin 100, there is provided a polishing part 103 having a tapered shape which decreases in diameter as advances to a blade tip part 102, being a tip end part. Burrs and naps on an outer periphery of a boring hole cannot be entirely eliminated only by a blade tip form. By polishing the burrs and naps on an outer periphery of paper hole with the polishing part 103 when boring, boring quality can be improved. Since the polishing part 103 is tapered, precision in coaxial degree between the boring pin 100 and a die hole can be relaxed.

Inventors:
ITO SHIGEYUKI
WATANABE KOJI
MURAKAMI NORIHIKO
Application Number:
JP2013268140A
Publication Date:
July 06, 2015
Filing Date:
December 25, 2013
Export Citation:
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Assignee:
RICOH CO LTD
International Classes:
B26F1/14; B26D5/08; B26F1/02; B65H37/04; G03G15/00
Domestic Patent References:
JP2012139815A2012-07-26
JP2013071189A2013-04-22
JPH0588818U1993-12-03
JPH1195516A1999-04-09
JPS63176011U1988-11-15
JPS58143162U1983-09-27
JP2011005603A2011-01-13
JP2003266385A2003-09-24
Attorney, Agent or Firm:
Naoki Yoshimura