Image heating apparatus using inductive heating
AssigneeCanon Kabushiki Kaisha
InventorsKenichi Ogawa, Yasumasa Ohtsuka
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Abstract
An image heating apparatus includes a movable member having an electroconductive portion; a back-up member for forming a nip with the movable member; wherein the back-up member has an electroconductive portion-adjacent a surface thereof; magnetic flux producing device for generating a magnetic flux; wherein eddy current is generated in the movable member and the back-up member by a magnetic flux generated by the magnetic flux generating device, and the movable member and the back-up member generate heat by the eddy current.
Claims32
An image heating apparatus comprising:
- a movable member having an electroconductive portion;
- a back-up member for forming a nip with said movable member;
- wherein said back-up member has an electroconductive portion adjacent a surface thereof;
- magnetic flux generating means for generating a magnetic flux;
- wherein eddy current is generated in said movable member and said back-up member by a magnetic flux generated by said magnetic flux generating means, and said movable member and said back-up member generate heat by the eddy current.
An image heating apparatus comprising:
- a movable member contactable with an unfixed toner image while it is moved;
- a back-up member for forming a nip with said movable member;
- wherein said back-up member has an electroconductive portion adjacent the surface thereof;
- magnetic flux generating means for generating magnetic flux;
- wherein eddy current is generated in said back-up member by a magnetic flux generated by said magnetic flux generating means, and said back-up member generates heat by the eddy current.
An image heating apparatus comprising:
- a movable member having an electroconductive portion:
- a back-up member for forming a nip with said movable member;
- wherein said back-up member has an electroconductive portion adjacent a surface thereof;
- an excitation coil for generating a magnetic flux;
- wherein said excitation coil is disposed across said movable member from said back-up member;
- control means for controlling a voltage applied to said excitation coil.
Dependencies are inferred from the claim text.