摘要:
PROBLEM TO BE SOLVED: To solve the following problem: when sheet winds around a heat roller and cannot be separated from the heat roller, jam of the sheet occurs.SOLUTION: In the fixing device 50, the guide roller 42 is provided on the separating claw 41 at a different position from the rotation fulcrum 41b of the separating claw 41, and the spring 43 generates a relatively small biasing force and allows the rotation of the separating claw 41 when the guide roller 42 is forced by the leading end of the sheet P. With such a configuration, the separating claw end 41a moves apart from the heat roller 31 for a short time period when the leading end of the sheet P passes the guide roller 42. As a result, even when the sheet P is not sufficiently separated from the heat roller 31, the separating claw 41 can separate the sheet P from the heat roller 31. As a result, the occurrence of jam of the sheet P can be prevented. Further, the separating claw end 41a is apart from the heat roller 31 each time the sheet P passes the guide roller 42, and therefore deposition of the toner on the separating claw end 41a is not likely to occur. As a result, a surface and a back surface of the sheet P can be prevented from being smeared with the toner.