US 9,809,000 B2
Sheet binding processing apparatus and post-processing apparatus having the same
Mamoru Kubo, Yamanashi-ken (JP)
Assigned to CANON FINETECH NISCA INC., Misato-shi, Saitama (JP)
Filed by NISCA CORPORATION, Minamikoma-gun, Yamanashi-ken (JP)
Filed on Oct. 19, 2015, as Appl. No. 14/886,379.
Claims priority of application No. 2014-213547 (JP), filed on Oct. 20, 2014.
Prior Publication US 2016/0107409 A1, Apr. 21, 2016
Int. Cl. B31F 5/02 (2006.01); G03G 15/00 (2006.01); B31F 1/07 (2006.01); B42F 3/00 (2006.01); B42B 4/00 (2006.01); B42B 5/00 (2006.01)
CPC B31F 5/02 (2013.01) [B31F 1/07 (2013.01); B42B 4/00 (2013.01); B42B 5/00 (2013.01); B42F 3/00 (2013.01); G03G 15/6541 (2013.01); G03G 15/6544 (2013.01); B31F 2201/00 (2013.01); G03G 2215/00827 (2013.01); G03G 2215/00848 (2013.01); G03G 2215/00852 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A sheet binding processing apparatus to perform a pressure-contact binding as pressure-nipping a plurality of sheets in a front-back direction of the sheets with a pair of pressurizing faces, comprising:
a pair of pressurizing members having the pressurizing faces; and
a driving device that causes at least one of the pressurizing faces to reciprocate between a waiting position being apart from the sheets and an operating position for pressurizing the sheets,
wherein the pair of pressurizing faces are formed to have tooth forms each having a convex shape and a concave shape, the tooth forms being engaged with each other along a predetermined tooth width, and
the tooth forms are shaped so that an engagement depth between a tooth top and a tooth root is varied along a tooth width direction toward a sheet end edge.