BINDING MEMBER, BINDING PROCESSING DEVICE, AND IMAGE PROCESSING DEVICE

摘要

This binding member comprises an upper tooth that has a protrusion and a recess for forming a relief on a paper bundle, and a lower tooth that has a recess and a protrusion for forming a relief on a recording material bundle and forms a pair with the upper tooth. At least one of the upper tooth and the lower tooth of this binding member has, in a cross-section of the tooth, a sunken region in the recess of the tooth, said sunken region being sunken in further than an imaginary line extended from a second side surface, which is a sloped surface.