BIND MEMBER, BIND PROCESSING APPARATUS AND IMAGE PROCESSING APPARATUS

Japanese Patent JP2017185786

A

PROBLEM TO BE SOLVED: To enhance binding force in a record material bundle in a bind process where a projecting part and a recessed part are combined to bind the record material bundle.SOLUTION: A bind member comprises upper tooth having a tooth shape consisting of a projecting part and a recessed part for forming a projection and a recession on a sheet bundle, and lower tooth having a tooth shape for forming a projection and a recession on a recording material bundle and consisting of a recessed part 552 and a projecting part as a partner of a pair with the upper tooth. Either one of the upper tooth or the lower tooth of the bind member has L1, L2, in cross sectional shape of the tooth, in a gap between a recessed part 552 and a projecting part 541 generated when the upper tooth and the lower tooth are engaged without interposed record material bundle, when compared interval distance H1 between a recessed part 552 and a projecting part 541 in press direction of the tooth at a position of distance L1 from center of the tooth in vertical direction to press direction of the tooth with interval distance H2 between the recessed part 552 and the projecting part 541 at a position of distance L2 longer than the distance L1, in which H1