Patents by Inventor Kazumasa Minami

Kazumasa Minami 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).

  • Punching device, paper sheet processing apparatus, and image forming apparatus
    Patent number: 9606493
    Abstract: A punching device includes: a punching member opens a punch hole on a sheet material on a die plate by penetrating a die hole provided to the die plate; a discharging member discharges static electricity charged on a punching chip generated by opening of the punch hole when the punching chip is guided to fall on the discharging member arranged on a lower side of the die hole and brought into contact with the discharging member; and a pressing member that presses the punching chip on the discharging member against the discharging member.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: March 28, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Akiyoshi Irie, Kazumasa Minami, Takuji Nakane
  • PUNCHING DEVICE, PAPER SHEET PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS
    Publication number: 20160091856
    Abstract: A punching device includes: a punching member opens a punch hole on a sheet material on a die plate by penetrating a die hole provided to the die plate; a discharging member discharges static electricity charged on a punching chip generated by opening of the punch hole when the punching chip is guided to fall on the discharging member arranged on a lower side of the die hole and brought into contact with the discharging member; and a pressing member that presses the punching chip on the discharging member against the discharging member.
    Type: Application
    Filed: September 11, 2015
    Publication date: March 31, 2016
    Applicant: Ricoh Company, Limited
    Inventors: Akiyoshi IRIE, Kazumasa MINAMI, Takuji NAKANE
  • Automatic original feeder
    Patent number: 7850169
    Abstract: A feed roller and a separation roller each having convex portions are arranged so that the convex portions engage with each other. A lever is provided such that one end of the lever is fixed to a rotatable shaft and other end slides on a shaft around which the separation roller rotates. The other end has at least two portions with different radii of curvature. A knob is integrally connected to the lever. When a user operates the knob, the lever rotates and the shaft around which the separation roller rotates is pushed away depending on the radii of curvature of the portion of the lever so that amount of engagement between the feed roller and the separation roller changes.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: December 14, 2010
    Assignee: Ricoh Company, Ltd.
    Inventor: Kazumasa Minami
  • Automatic original feeder
    Publication number: 20070029720
    Abstract: A feed roller and a separation roller each having convex portions are arranged so that the convex portions engage with each other. A lever is provided such that one end of the lever is fixed to a rotatable shaft and other end slides on a shaft around which the separation roller rotates. The other end has at least two portions with different radii of curvature. A knob is integrally connected to the lever. When a user operates the knob, the lever rotates and the shaft around which the separation roller rotates is pushed away depending on the radii of curvature of the portion of the lever so that amount of engagement between the feed roller and the separation roller changes.
    Type: Application
    Filed: August 4, 2006
    Publication date: February 8, 2007
    Inventor: Kazumasa Minami