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US 2012/0057911 A1Published application
Heating roller comprising induction heating coil made of nickel alloy, fixing unit and image forming apparatus having the same
AssigneeSumsung Electronics Co., Ltd.
InventorSok-won Paik
Life of this patent
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Abstract
A heating roller is provided in an image forming apparatus and includes a roller body and an induction heating layer surrounding the roller body to generate Joule's heat by an induction current. The induction heating layer is made of an induction heating coil wound around the surface of the roller body and the induction heating coil is made of a nickel alloy.
Claims17
A heating roller provided in a fixing unit of an image forming apparatus, the heating roller comprising:
- a roller body;
- and
- an induction heating layer surrounding the roller body and generating Joule's heat by an induction current;
- wherein the induction heating is made of an induction heating coil wound around the surface of the roller body and the induction heating coil is made of a nickel alloy.
1 more element
A fixing unit provided in an image forming apparatus to fix developer on a printing medium, the fixing unit comprising:
- a pressure roller pressing the printing medium;
- a heating roller facing the pressure roller;
- and
- an exciting coil disposed near the heating roller to induce current at an induction heating coil of the heating roller,
- wherein the heating roller comprises
- a roller body;
- and
- an induction heating layer surrounding the roller body to generate Joule's heat by an induction current,
- wherein the induction heating layer is made of an induction heating coil wound around the surface of the roller body and the induction heating coil is made of a nickel alloy.
6 more elements
An image forming apparatus comprising:
- a fixing unit to fix developer on a printing medium,
- wherein the fixing unit comprises
- a pressure roller pressing the printing medium;
- a heating roller facing the pressure roller;
- and
- an exciting coil disposed near the heating roller to induce current at an induction heating coil of the heating roller,
- wherein the heating roller comprises
- a roller body;
- and
- an induction heating layer surrounding the roller body to generate Joule's heat by an induction current,
- wherein the induction heating layer is made of an induction heating coil wound around the surface of the roller body and the induction heating coil is made of a nickel alloy.
8 more elements
Dependencies are inferred from the claim text.