Fuser, image forming apparatus, and fusing method
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorShuji YOKOYAMA
Life of this patent
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Abstract
According to one embodiment, a fuser includes a rotatable heating member having a plurality of holes formed on difference areas, which are not overlapped with each other and which are the difference between an area in the rotating direction where a sheet having a first width is in contact during the conveyance and an area in the rotating direction where a sheet having a second width, different from the first width, is in contact during the conveyance, and a rotatable pressing member that is brought into contact with the rotatable heating member and conveys the sheet as nipping the sheet with the rotatable heating member.
Claims20
A fuser comprising:
- a rotatable heating member having a plurality of holes formed on difference areas, which are not overlapped with each other and which are the difference between an area in the rotating direction where a sheet having a first width is in contact during the conveyance and an area in the rotating direction where a sheet having a second width, different from the first width, is in contact during the conveyance;
- and
- a rotatable pressing member that is brought into contact with the rotatable heating member and conveys the sheet as nipping the sheet with the rotatable heating member.
The fuser according to claim 5, wherein
- the holes are arranged at equal intervals.
An image forming apparatus comprising:
- a sheet feed section that feeds a sheet;
- an image forming section that forms an image on the sheet;
- a rotatable heating member having a plurality of holes formed on difference areas, which are not overlapped with each other and which are the difference between an area in the rotating direction where a sheet having a first width is in contact during the conveyance and an area in the rotating direction where a sheet having a second width, different from the first width, is in contact during the conveyance;
- and
- a rotatable pressing member that is brought into contact with the rotatable heating member and conveys the sheet as nipping the sheet with the rotatable heating member.
A fusing method comprising:
- preparing a rotatable heating member having a metal conductive layer;
- forming difference areas, which are not overlapped with each other and which are the difference between an area in the rotating direction where a sheet having a first width is in contact during the conveyance and an area in the rotating direction where a sheet having a second width, different from the first width, is in contact during the conveyance, and forming a plurality of holes on the metal conductive layer corresponding to the areas;
- and
- electromagnetically heating the metal conductive layer by an induction heating coil, which is formed along the rotatable heating member, so as to cut a magnetic field generated at the portion opposite to the plurality of holes.
Dependencies are inferred from the claim text.