Fusing roller device for electrophotographic image forming apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorsDurk-hyun Cho, Hwan-guem Kim
Life of this patent
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Abstract
A fusing roller device for an electrophotographic image forming apparatus, the device including an internal tube having both ends open; a heating portion surrounding the internal tube and generating heat by externally supplied current; and a fusing roller surrounding the heating portion and fusing a toner image on paper by heat transferred from the heating portion.
Claims23
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube having both ends open;
- a heating portion surrounding the internal tube and generating heat by externally supplied current;
- and
- a fusing roller, surrounding the heating portion, comprising a cylindrical body and a protective layer to fuse a toner image on paper by heat transferred from the heating portion,
- wherein the heating portion is pressure adhered with the internal tube adhering a surface of the internal tube and insulating portions of the heating portion through application of a predetermined pressure.
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube having both ends open;
- a heating portion surrounding the internal tube and generating heat by externally supplied current;
- and
- a fusing roller, surrounding the heating portion, comprising a cylindrical body and a protective layer to fuse a toner image on paper by heat transferred from the heating portion,
- wherein the thickness of the internal tube is less than about 0.5 mm.
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube having both ends open;
- a heating portion surrounding the internal tube and generating heat by externally supplied current;
- a fusing roller, surrounding the heating portion, comprising a cylindrical body and a protective layer to fuse a toner image on paper by heat transferred from the heating portion;
- an end cap and a power transmission end cap respectively installed on ends of the fusing roller;
- and
- an air vent provided in one of the end cap or the power transmission end cap to ventilate an internal space of the fusing roller, with an internal pressure in the fusing roller being maintained at an atmospheric pressure.
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube having both ends open;
- a heating portion surrounding the internal tube and generating heat by externally supplied current;
- a fusing roller, surrounding the heating portion, comprising a cylindrical body and a protective layer to fuse a toner image on paper by heat transferred from the heating portion;
- and
- an insulator made of mica to insulate the heating portion from the internal tube and the fusing roller.
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube having both ends open;
- a heating portion surrounding the internal tube and generating heat by externally supplied current;
- a fusing roller, surrounding the heating portion, comprising a cylindrical body and a protective layer to fuse a toner image on paper by heat transferred from the heating portion;
- and
- an insulator made of magnesium oxide (MgO) to insulate the heating portion from the internal tube and the fusing roller.
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube having both ends open;
- a heating portion surrounding the internal tube and generating heat by externally supplied current;
- a fusing roller, surrounding the heating portion, comprising a cylindrical body and a protective layer to fuse a toner image on paper by heat transferred from the heating portion;
- and
- an insulator made of aluminum oxide (Al2O3) to insulate the heating portion from the internal tube and the fusing roller.
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube having both ends open;
- a heating coil surrounding the internal tube and generating heat by externally supplied current;
- and
- a fusing roller, surrounding the heating coil, to fuse a toner image on paper by heat transferred from the heating coil,
- wherein the heating coil is pressure adhered with the internal tube adhering a surface of the internal tube and insulating portions of the heating portion through application of a predetermined pressure.
A fusing roller device for an electrophotographic image forming apparatus, the device comprising:
- an internal tube made of aluminum having both ends open;
- a heating portion surrounding the internal tube and generating heat by externally supplied current;
- and
- a fusing roller, surrounding the heating portion, comprising a cylindrical body and a protective layer to fuse a toner image on paper by heat transferred from the heating portion, the aluminum internal tube increasing a heat transfer efficiency,
- wherein the heating portion is pressure adhered with the internal tube adhering a surface of the internal tube and insulating portions of the heating portion through application of a predetermined pressure.
Dependencies are inferred from the claim text.