Patents by Inventor Yoshihiko Toyoizumi

Yoshihiko Toyoizumi 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).

  • Patent number: 8155568
    Abstract: A toner container for replenishing toner to an image forming apparatus, including: a container main body having a toner outlet and a toner conveyance device which conveys the toner toward the toner outlet through rotation; a cap which covers the toner outlet and has a toner ejecting section; a toner ejecting member which conveys the toner from the container main body to the cap; and a holding ring which is fixed with the toner ejecting member, wherein the container main body has a first engagement member which engages with an engagement section of the holding ring such that the container main body, rotates together with the holding ring and the toner ejecting member, and wherein the cap has a second engagement member which engages with the holding ring such that the holding ring and the toner ejecting member are rotatable.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: April 10, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Kiyotaka Naito, Yoshihiko Toyoizumi, Tatsuo Nakanishi
  • Patent number: 7983592
    Abstract: A toner container for replenishing toner to an image forming apparatus including: a container main body which comprises a toner storage section and a toner outlet; a cap that covers the toner outlet; and a seal member that is interposed between the container main body and the cap to prevent toner leakage, wherein the container main body has a step portion formed between the toner storage section and the toner outlet, and the seal member is fixed on the step portion to be interposed between the step portion and the cap.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: July 19, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Kiyotaka Naito, Yoshihiko Toyoizumi, Tatsuo Nakanishi
  • Publication number: 20090279916
    Abstract: A toner container for replenishing toner to an image forming apparatus including: a container main body which comprises a toner storage section and a toner outlet; a cap that covers the toner outlet; and a seal member that is interposed between the container main body and the cap to prevent toner leakage, wherein the container main body has a step portion formed between the toner storage section and the toner outlet, and the seal member is fixed on the step portion to be interposed between the step portion and the cap.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 12, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Kiyotaka NAITO, Yoshihiko TOYOIZUMI, Tatsuo NAKANISHI
  • Publication number: 20090279921
    Abstract: A toner container for replenishing toner to an image forming apparatus, including: a container main body having a toner outlet and a toner conveyance device which conveys the toner toward the toner outlet through rotation; a cap which covers the toner outlet and has a toner ejecting section; a toner ejecting member which conveys the toner from the container main body to the cap; and a holding ring which is fixed with the toner ejecting member, wherein the container main body has a first engagement member which engages with an engagement section of the holding ring such that the container main body, rotates together with the holding ring and the toner ejecting member, and wherein the cap has a second engagement member which engages with the holding ring such that the holding ring and the toner ejecting member are rotatable.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 12, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Kiyotaka NAITO, Yoshihiko TOYOIZUMI, Tatsuo NAKANISHI
  • Patent number: 6999705
    Abstract: A toner container for supplying and/or replenishing toner into a development apparatus of image forming apparatus, by being engaged with the rotation transfer member of the development apparatus and being rotated about a center axis of the toner container integrally with the rotation transfer member. The toner container is structured with a cylindrical body having a toner outlet on one end of the cylindrical body, nearby a center axis of the cylindrical body, a convex spiral flute formed on the inner periphery of the cylindrical body, and a concave spiral flute formed on the outer periphery of the cylindrical body, wherein a ratio L/D of length L to diameter D of the cylindrical body is in a range of ½?L/D?10, a thickness of the cylindrical body t is 0.3 mm?t?5.0 mm; and a thickness deviation of the cylindrical body is ?t?20%.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: February 14, 2006
    Assignees: Konica Corporation, Konica Minolta Business Technologies, Inc.
    Inventors: Masahiro Yoshino, Tatsuo Nakanishi, Yoshihiko Toyoizumi
  • Publication number: 20050169674
    Abstract: A toner container for supplying and/or replenishing toner into a development apparatus of image forming apparatus, by being engaged with the rotation transfer member of the development apparatus and being rotated about a center axis of the toner container integrally with the rotation transfer member. The toner container is structured with a cylindrical body having a toner outlet on one end of the cylindrical body, nearby a center axis of the cylindrical body, a convex spiral flute formed on the inner periphery of the cylindrical body, and a concave spiral flute formed on the outer periphery of the cylindrical body, wherein a ratio L/D of length L to diameter D of the cylindrical body is in a range of ½?L/D?10, a thickness of the cylindrical body t is 0.3 mm?t?5.0 mm; and a thickness deviation of the cylindrical body is ?t?20%.
    Type: Application
    Filed: April 4, 2005
    Publication date: August 4, 2005
    Inventors: Masahiro Yoshino, Tatsuo Nakanishi, Yoshihiko Toyoizumi
  • Patent number: 6340036
    Abstract: A control method for discharging particles and an apparatus executing the method are disclosed. The control method includes steps of passing particles through a particles-supplying path connected to a supplying section of the particles at one end of it, and having a delivery opening for discharging the particles at the other end of it and controlling to form a cover consisting of at least a part of the particles by changing a density of at least a part of the particles existing in the particles-supplying path so as not to discharge the particles from the delivery opening.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: January 22, 2002
    Assignee: Konica Corporation
    Inventors: Yoshihiko Toyoizumi, Chuji Iino
  • Patent number: 5392102
    Abstract: An image-forming apparatus includes a developer container containing a developer which is to be inserted into a developer replenisher of a main body, a cover for the developer replenisher and a cover for the developer container. The cover for the developer replenisher and the cover for the developer container are capable of being opened when the developer container is attached to the main body. The image-forming apparatus has a discriminator for discriminating whether the inserted developer container is identified with the developer replenisher. The cover for the developer replenisher and the cover for the developer container are to be opened only when the inserted developer container is identified.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: February 21, 1995
    Assignee: Konica Corporation
    Inventors: Yoshihiko Toyoizumi, Masahiro Yoshino