Device for fusing toner on print medium
AssigneeSamsung Electronics Co., Ltd.
InventorsYoung-min Chae, Sang-yong Han, Joong-gi Kwon, Hwan-guem Kim, Durk-hyun Cho
Life of this patent
Estimating the term…
Abstract
A device for fusing a predetermined toner image on a paper and which electrically insulates a heating body of a fusing unit from a power supply unit by heating the heating body using an induced current generated by a transformer. The fusing device includes an insulation unit for generating an induced current in response to an alternating current, a heating body heated by the generated induced current, a toner fusing unit which fuses the toner image on the paper using the heat received from the heating body, and a tube-expansion adhesion portion closely adhering the heating body to the toner fusing unit using a predetermined tube-expansion pressure.
Claims30
A unit for fusing a toner image, the unit comprising:
- an insulation unit for generating a first induced current, the insulation unit comprising a primary and a secondary coil, wherein the primary coil is separated from a heater of the unit and is switchably controlled by an alternating current generator electrically coupled to the primary coil;
- the heater which is resistance-heated by a second induced current generated in the heater by the first induced current received from the secondary coil of the insulation unit, and wherein the insulation unit is physically outside the heater;
- a toner fusing unit comprised of a roller which fuses the toner image using the heat received from the heater;
- and
- an end cap installed to at least one of opposite ends of the unit, and in which an air vent is formed,
- wherein an internal space of the unit is ventilated via the air vent.
A image forming apparatus including a unit for fusing a toner image, the unit included in the image forming apparatus comprising:
- an insulation unit for generating a first induced current, the insulation unit comprising a primary and a secondary coil, wherein the primary coil is separated from a heater of the unit and is switchably controlled by an alternating current generator electrically coupled to the primary coil;
- the heater which is resistance-heated by a second induced current generated in the heater by the first induced current received from the secondary coil of the insulation unit, and wherein the insulation unit is physically outside the heater;
- a toner fusing unit comprised of a roller which fuses the toner image using the heat received from the heater;
- and
- an end cap installed to at least one of opposite ends of the unit, and in which an air vent is formed,
- wherein an internal space of the unit is ventilated via the air vent.
Dependencies are inferred from the claim text.