Film and image heating device using film
AssigneeCanon Kabushiki Kaisha
InventorsTakanori Mitani, Akimichi Suzuki, Kazuhiro Doda, Satoshi Nishida, Isamu Takeda, Akira Okano, Masahiro Suzuki
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Abstract
A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.
Claims10
A film unit used in a fixing apparatus having a heating roller, the film unit comprising:
- a cylindrical film including a resin layer, which is made from a crystalline thermoplastic resin, wherein a degree of crystallinity of the resin layer is not less than 81% of a maximum saturated degree of crystallinity of the crystalline thermoplastic resin;
- and
- a nip forming member contacting an inner surface of the film, configured to form a nip portion with the heating roller via the film,
- wherein an image is fixed on a recording material by heat from the heating roller while the recording material, on which the image is formed, is being conveyed at the nip portion.
A fixing apparatus comprising:
- a cylindrical film including a resin layer, which is made from a crystalline thermoplastic resin, wherein a degree of crystallinity of the resin layer is not less than 81% of a maximum saturated degree of crystallinity of the crystalline thermoplastic resin;
- a pressure roller being in contact with an outer surface of the film;
- and
- a nip forming member contacting an inner surface of the film, configured to form a nip portion with the pressure roller via the film,
- wherein an image is fixed on a recording material by heat from the film while the recording material, on which the image is formed, is being conveyed at the nip portion.
A film unit used in a fixing apparatus, the film unit comprising:
- a cylindrical film including a resin layer, which is made from a crystalline thermoplastic resin, wherein a degree of crystallinity of the resin layer is not less than 81% of a maximum saturated degree of crystallinity of the crystalline thermoplastic resin;
- and
- a nip forming member contacting an inner surface of the film, configured to form a nip portion with a pressure roller mounted on the fixing apparatus via the film,
- wherein an image is fixed on a recording material by heat from the film while the recording material, on which the image is formed, is being conveyed at the nip portion.
Dependencies are inferred from the claim text.