Patents by Inventor Hidetaka Nanao

Hidetaka Nanao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Thermal fixing apparatus and image forming apparatus
    Patent number: 11209760
    Abstract: A thermal fixing apparatus, including a rotatable first member; a heater heating the first member; a rotatable second member forming a nip portion with the first member; and a pressurizing member disposed inside the first member, and having a contact surface with an inner surface of the first member. The pressurizing member includes a surface layer constituting the contact surface, and the surface layer comprises a diamond-like carbon film containing a hydrogen atom (H), a carbon atom (C) and a silicon atom (Si). 100×(H)/((H)+(C)) is 5 or less. 100×(Si)/((Si)+(C)) is 1 to 20. Between the contact surface and an inner circumferential surface of the first member, an oil film containing a fluorinated oil and a silicone oil is present.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: December 28, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirotaka Fukushima, Yusuke Owaki, Yoshiko Igarashi, Hidetaka Nanao, Yasushi Hoshi
  • THERMAL FIXING APPARATUS AND IMAGE FORMING APPARATUS
    Publication number: 20210382426
    Abstract: A thermal fixing apparatus, including a rotatable first member; a heater heating the first member; a rotatable second member forming a nip portion with the first member; and a pressurizing member disposed inside the first member, and having a contact surface with an inner surface of the first member. The pressurizing member includes a surface layer constituting the contact surface, and the surface layer comprises a diamond-like carbon film containing a hydrogen atom (H), a carbon atom (C) and a silicon atom (Si). 100×(H)/((H)+(C)) is 5 or less. 100×(Si)/((Si)+(C)) is 1 to 20. Between the contact surface and an inner circumferential surface of the first member, an oil film containing a fluorinated oil and a silicone oil is present.
    Type: Application
    Filed: June 2, 2021
    Publication date: December 9, 2021
    Inventors: Hirotaka Fukushima, Yusuke Owaki, Yoshiko Igarashi, Hidetaka Nanao, Yasushi Hoshi