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US 2001/0022299 A1Published application
Fixing device using induction heating
AssigneeToshiba Tec Kabushiki Kaisha
InventorsOsamu Takagi, Satoshi Kinouchi
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AssigneeToshiba Tec Kabushiki Kaisha
InventorsOsamu Takagi, Satoshi Kinouchi
Estimating the term…
An electrophotography fixing device has a heating roller and an induction heating device. In order to improve heat resistance, heat radiating performance and insulation performance and in order to appropriately uniformly heat the heating roller, in the induction heating device, induction heating coils wound onto a core are fixed by varnish mixed with mica, and the outside surfaces thereof are fixed by a heat resistant bundling band or a molded body of a heat resistant material, or coated with a heat resistant, insulating and thermal conductive sheet. Alternatively, the same sheets as the above described sheet are provided between the core and the coils and between the layers of the coils. In addition, the core is formed with a hole extending in axial directions or holes extending in directions perpendicular to the axial directions. Moreover, the coils are doubly insulated.
A fixing device using induction heating for causing alternating current to pass through electromagnetic induction coils, which are arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein the fixing of said electromagnetic induction coils to each other and the fixing of said core to said coils are carried out by an adhesive material mixed with mica.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein said electromagnetic induction coil is wound onto a core of a non-magnetic material coated with a resin or paint.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein said coil is wound around a first axis, and said coil thus wound is fixed by winding a heat resistant bundling band onto said coil around a second axis substantially perpendicular to said first axis.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein said coil is wound around a first axis, and said coil thus wound is fixed by a molded body of a heat resistant material having a member wound onto said coil around an axis perpendicular to at least said first axis.
A fixing device using induction heating for causing alternating current to pass through electromagnetic induction coils, which are arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein a heat resistant, insulating and heat conductive sheet for providing both of heat radiation and insulation of said coils is provided on the surfaces of said coils.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein said coil is wound onto a core of a non-magnetic material, and a heat resistant, insulating and heat conductive sheet for providing both of heat radiation and insulation of said coils is provided between the surface of said core and said coil.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein the center of said coil in axial directions is offset from the center of said endless member, which serves as an object to be heated, in axial directions in accordance with thermal load of said endless member.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein said coil is wound onto a core of a non-magnetic material, and said core has a hole extending in directions substantially perpendicular to the axis of said core.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein said coil is wound onto a core of a non-magnetic material, and said core has a first hole extending in the axial directions of said core.
A fixing device using induction heating for causing alternating current to pass through an electromagnetic induction coil, which is arranged so as to be close to an endless member having a metal layer of a conductive material, to cause said endless member to generate heat to heat a member to be fixed, wherein said coil has a plurality of unit wires, each of which comprises a conductor coated with a first insulating coating, and said plurality of unit wires are coated with a second insulating coating to doubly isolate said coil from said endless member.
Dependencies are inferred from the claim text.