Patents by Inventor Kazuyuki NAKATSURU

Kazuyuki NAKATSURU 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, and image forming method
    Patent number: 9046863
    Abstract: An image forming apparatus is provided. The image forming apparatus includes a photoreceptor; a charger to charge a surface of the photoreceptor; a circulating agent applicator to apply a circulating agent to the surface of the photoreceptor while contacting the surface of the photoreceptor to form a film of the circulating agent on the surface of the photoreceptor; and a contact member contacted with the surface of the photoreceptor. The acting force, which is generated by contact of the contact member with the photoreceptor and includes a tangential force Ft, which is a force in a tangential direction at a contact portion of the contact member with the surface of the photoreceptor, and a normal force Fn, which is a force in a normal direction at the contact portion, satisfies the following relationships, 0.90?Ft/Fn?0.96, and 1.15 kgf?Ft?1.35 kgf.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 2, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidetoshi Kami, Kazuyuki Nakatsuru
  • IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
    Publication number: 20140193185
    Abstract: An image forming apparatus is provided. The image forming apparatus includes a photoreceptor; a charger to charge a surface of the photoreceptor; a circulating agent applicator to apply a circulating agent to the surface of the photoreceptor while contacting the surface of the photoreceptor to form a film of the circulating agent on the surface of the photoreceptor; and a contact member contacted with the surface of the photoreceptor. The acting force, which is generated by contact of the contact member with the photoreceptor and includes a tangential force Ft, which is a force in a tangential direction at a contact portion of the contact member with the surface of the photoreceptor, and a normal force Fn, which is a force in a normal direction at the contact portion, satisfies the following relationships, 0.90?Ft/Fn?0.96, and 1.15 kgf?Ft?1.35 kgf.
    Type: Application
    Filed: December 13, 2013
    Publication date: July 10, 2014
    Inventors: Hidetoshi KAMI, Kazuyuki NAKATSURU