FOLDING DEVICE, POST-PROCESSING DEVICE, AND IMAGE FORMING DEVICE

摘要

This folding device (190) has a blade member (222) and a folding roller pair (223). The blade member (222) moves from an initial position (HP) to a protrusion position (TP), whereby the paper sheet (T) is pushed into a nip (N1) between the folding roller pair (223) while being folded. The blade member (222) is moved in a reciprocating manner by the rotation of the rotation driving unit (360). If the rotation load of the rotation driving unit (360) reaches a predetermined load or above while the blade member (222) is moving from the initial position (HP) to the protrusion position (TP), the direction of rotation of the rotation driving unit (360) is reversed, and the blade member (222) is returned to the initial position (HP). Damage to the blade member (222) when the paper sheet (T) is being folded is thereby minimized. In addition, the folding device (190) will not stop performing the processing action while the blade member (222) is inserted into the nip (N1).