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US 6,687,481 B2Granted
Inductive thermal fixing apparatus having magnetic flux blocking plate with specific thickness
AssigneeCanon Kabushiki Kaisha
InventorsOsamu Watanabe, Nobuaki Hara, Toshinori Nakayama
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Abstract
An image fixing apparatus has a magnetic field generating unit for generating a magnetic flux; a heating member generating heat by induction heating by the magnetic flux generated by the magnetic field generating unit; and a blocking plate, disposed for movement between the magnetic field generating unit and the heating member, for blocking the magnetic flux from the magnetic field generating means, wherein the blocking plate comprises an electroconductive member having a thickness of 0.1-2 mm.
Claims6
An image fixing apparatus comprising:
- magnetic field generating means for generating a magnetic flux;
- a heating member generating heat by induction heating by the magnetic flux generated by said magnetic field generating means wherein said heating member has a metal layer having a thickness of 0.3-1 mm;
- and
- a blocking plate, disposed for movement between said magnetic field generating means and said heating member, for blocking the magnetic flux from said magnetic field generating means,
- wherein said blocking plate comprises an electroconductive member having a thickness of 0.1-2 mm.
2 more elements
Dependencies are inferred from the claim text.