Patent ID: 7630675
Filing Date: 2009-12-08
Classification: G03G

Abstract:
1. A fuser unit with a cleaning mechanism, comprising: a set of a heat roller and a pressure roller for sandwiching a recording sheet while heating the recording sheet by the heat roller; a feed roller for feeding a band-shaped cleaning member which is windable; a press roller for pressing the fed cleaning member against a surface of the heat roller or the pressure roller; a wind roller for winding the cleaning member which is pressed by the press roller; a first reverse rotation preventing mechanism for preventing rotation of the press roller from rotating in the opposite direction to the winding direction of the cleaning member; a second reverse rotation preventing mechanism for preventing rotation of the wind roller from rotating in the opposite direction to the winding direction of the cleaning member; and a rotation preventing mechanism, wherein the feed roller feeds the cleaning member intermittently, and the rotation preventing mechanism includes a disengaging mechanism to prevent the feed roller from rotating in the feeding direction when the cleaning member is not wound, and to allow the feed roller to rotate in the feeding direction when the cleaning member is wound.