Fixing device and image forming apparatus

摘要

A fixing device includes a fixing belt, a pressuring rotation body, a cap member and an elastic member. The cap member includes a main body part covering an outside of an end part of the fixing belt and a flange part covering an external diameter side of the end part. The elastic member includes a belt insertion part into which the end part is inserted, a cap insertion part into which the flange part is inserted and a contact part coming into contact with an internal side face of the main body part. When the fixing belt is deformed to an internal diameter side, the elastic member is elastically deformed to make the belt insertion part moved to the internal diameter side, and then, a gap is formed in at least a part between the internal side face of the main body part and the contact part.

主权项

1. A fixing device comprising:
a fixing belt rotating around a rotation axis; a pressuring rotation body coming into pressure contact with the fixing belt to form a fixing nip; a cap member attached to an end part of the fixing belt, the cap member including
a main body part covering outside in the rotation axis direction of the end part of the fixing belt, anda flange part extending from the main body part to inside in the rotation axis direction and covering an external diameter side of the end part of the fixing belt; and an elastic member interposed between the end part of the fixing belt and the cap member, the elastic member including
a belt insertion part into which the end part of the fixing belt is inserted,a cap insertion part into which the flange part is inserted, the cap insertion part arranged at the external diameter side from the belt insertion part anda contact part arranged at the outside in the rotation axis direction from the belt insertion part and cap insertion part to come into contact with an internal side face in the rotation axis direction of the main body part; wherein when the fixing belt is deformed to an internal diameter side, the elastic member is elastically deformed so as to make the belt insertion part moved to the internal diameter side with respect to the cap insertion part, and then, a gap is formed in at least a part between the internal side face in the rotation axis direction of the main body part and the contact part.