Patent ID: 9519248
Filing Date: 2016-12-13
CPC Classification: G03G

Claim Text:
1. A fixing device comprising: a rotatable fixing member; a pressing member to contact the fixing member with pressure to form a nip between the pressing member and the fixing member; an induction heating unit disposed outside of the fixing member and serving as a heating source to heat the fixing member, the induction heating unit including an excitation coil, a coil holder to hold the excitation coil, and a cover member provided facing the coil holder with the coil holder interposed between the cover member and the fixing member, the cover member includes a shielding member to shield an electromagnetic wave arising from the excitation coil, and the coil holder, the excitation coil, and the cover member are arranged in this order relative to the fixing member; and a conductive wire drawn out of the induction heating unit to be disposed outside the cover member through a hole bored in the cover member and provided substantially at a center of the cover member in a longitudinal direction of the induction heating unit, wherein the induction heating unit includes at least one magnetic arch core, and the at least one magnetic arch core is disposed closer to the fixing member than the cover member is to the fixing member.