Sheet binding processing apparatus and post-processing apparatus having the same
AssigneeCanon Finetech Nisca Inc.
InventorMamoru Kubo
Life of this patent
Estimating the term…
Abstract
The present invention is to provide a binding processing apparatus that prevents easy unbinding regardless of thickness of a sheet bundle to be bound and that lessens influence of damage on sheets. In the present sheet binding processing apparatus, a pair of pressurizing faces for pressure-nipping a sheet bundle 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.
Claims8
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.
Dependencies are inferred from the claim text.