| 摘要 |
A positional relation between the position of the positioning plate 22 for conducting reference-positioning on sheets of paper, which are fed onto the sheet table of the bind processing device, and the position of the division ring binder held by the binding mechanism section is set to be the same as a positional relation between the sides of the sheets of paper P and the punch holes. Forward end portions of the sheets of paper are pushed onto the sheet forward end position regulating plate 19 , and the movable positioning plate 23 comes close to the reference positioning plate 22 and conducts positioning on the sheets of paper in a direction perpendicular to the sheet conveyance direction so as to arrange the positions of the sheets of paper. In this laminated state, the sheets of paper are sent to the binding mechanism section and attached with a binder. At the time of attaching the binder, positions of the punch holes and positions of the ring-portions of the division type ring binder accurately agree with each other. Accordingly, there is no possibility that the binder is defectively attached to the punch holes.
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