Patents by Inventor Ryuta Al

Ryuta Al 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).

  • Image forming apparatus including two toner cleaning members
    Patent number: 7668478
    Abstract: An image forming apparatus has: an image bearing member which bears a toner image; a transfer member which comes into pressure contact with the image bearing member and transfers the toner image on the image bearing member onto a recording material; a first cleaning member which electrostatically collects the toner on the transfer member; and a second cleaning member which electrostatically collects the toner on the first cleaning member, wherein when a ratio of an amount of toner which is adsorbed by the first cleaning member to an amount of toner on the transfer member is assumed to be ?(%) and a ratio of an amount of toner which is adsorbed by the second cleaning member to an amount of toner on the first cleaning member is assumed to be ?(%), ?>90(%), ?>90(%), and ???.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: February 23, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryuta Al
  • Image heating apparatus
    Patent number: 7430392
    Abstract: An image heating apparatus includes a heating rotatable member for heating an image on a recording material in a nip; a nip forming member for cooperating with said heating rotatable member to form the nip; a rubbing rotatable member having a rubbing material for rubbing said heating rotatable member; the following is satisfied: 7×10?3?(P/?H tan ?) (|V?v|/V)?68×10?3 where P: load [N] by said rubbing member to said heating rotatable member, V: peripheral speed of said heating rotatable member [mm/sec], v: peripheral speed [mm/sec] the of said rubbing member, h: microhardness [GPa] of said heating rotatable member, and ?: a half-apex-angle [°] of said rubbing material.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: September 30, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshikuni Ito, Toshinori Nakayama, Ryuta Al
  • IMAGE HEATING APPARATUS
    Publication number: 20080038027
    Abstract: An image heating apparatus includes a heating rotatable member for heating an image on a recording material in a nip; a nip forming member for cooperating with said heating rotatable member to form the nip; a rubbing rotatable member having a rubbing material for rubbing said heating rotatable member; the following is satisfied: 7×10?3?(P/?H tan ?) (|V?v|/V)?68×10?3 where P: load [N] by said rubbing member to said heating rotatable member, V: peripheral speed of said heating rotatable member [mm/sec], v: peripheral speed [mm/sec] the of said rubbing member, h: microhardness [GPa] of said heating rotatable member, and ?: a half-apex-angle [°] of said rubbing material.
    Type: Application
    Filed: May 18, 2007
    Publication date: February 14, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yoshikuni Ito, Toshinori Nakayama, Ryuta Al