Patent ID: 7901172

Claim:
A bind processing device for use with a binder comprising a continuous rectangular bar-like spine portion and ring portions arranged at regular intervals along both sides of the spine portion, each of the ring portions comprising a central ⅓ ring connected to the spine portion, a first ⅓ ring connected to the central ⅓ ring by a hinge and a second ⅓ ring connected to the central ⅓ ring by a hinge, the binding processing device comprising: a first pusher and a second pusher; a drive mechanism that symmetrically drives the first and second pushers; and a drive motor that drives the drive mechanism, wherein the first pusher and the second pusher are configured to be driven in a closing direction so as to close the ring portions of the binder so that respective pairs of forward end portions of the first ⅓ rings and the second ⅓ rings are engaged with each other within punch holes on the sheets of loose leaf paper; the drive mechanism comprising: a pair of levers connected with each other by a pin; and a lever opening and closing drive mechanism.