Patent ID: 9703247
Date: 2017-07-11
CPC Classifications: B65H,G03G

Claim:
1. A sheet post-processing apparatus comprising: a supporting member configured to support a trailing end portion in a conveying direction of a sheet; a plurality of paddles configured to rotate around a rotating shaft independently from the supporting member, nip and hold the trailing end portion of the sheet in conjunction with the supporting member from both sides in a thickness direction of the sheet, and nip and hold trailing end portions of following sheets, which are stacked on the sheet, one by one from the thickness direction of the trailing end portion, in the plurality of paddles, a length from the rotating shaft to a distal end of a paddle on a far side from the supporting member in a rotating direction being relatively larger than a length from the rotating shaft to a distal end of a paddle on a near side from the supporting member in the rotating direction; and a driving member configured to drive to rotate paddles other than the most backward paddle among the plurality of paddles according to rotation of the most backward paddle.