Patents by Inventor Shoichiro Ishibashi

Shoichiro Ishibashi 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: 8824934
    Abstract: A toner supply system having: a receiving section that is set in a body of an image forming apparatus so as not to rotate; and a substantially cylindrical toner container that is mountable in and dismountable from the receiving section and that can be driven to rotate on an axis while being mounted in the receiving section, wherein: the toner container has a first toner feeder for feeding toner stored therein toward the receiving section while the toner container is rotated; and the receiving section has a supply port that permits toner fed thereto with rotation of the toner container to drop down and a toner stirrer that extends to a position close to the first toner feeder located inside the toner container while the toner container is mounted in the receiving section.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: September 2, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Hideji Hayashi, Shoichiro Ishibashi
  • Publication number: 20130064577
    Abstract: A toner supply system having: a receiving section that is set in a body of an image forming apparatus so as not to rotate; and a substantially cylindrical toner container that is mountable in and dismountable from the receiving section and that can be driven to rotate on an axis while being mounted in the receiving section, wherein: the toner container has a first toner feeder for feeding toner stored therein toward the receiving section while the toner container is rotated; and the receiving section has a supply port that permits toner fed thereto with rotation of the toner container to drop down and a toner stirrer that extends to a position close to the first toner feeder located inside the toner container while the toner container is mounted in the receiving section.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 14, 2013
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Hideji HAYASHI, Shoichiro ISHIBASHI
  • Patent number: 7282313
    Abstract: Disclosed is a production method of an electrophotographic toner, which comprises toner particles comprising a resin and a colorant. The method comprises a step of forming toner particles in an aqueous medium, and processing an aqueous medium containing the toner particles or a component of the toner particles by gas bubbles.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: October 16, 2007
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Akira Ohira, Junji Ujihara, Shoichiro Ishibashi, Kentarou Yamawaki
  • Patent number: 7258960
    Abstract: An apparatus for producing toner for developing an electrostatic latent image, is provided with an inlet section to receive a slurry containing toner particles, impure fine particles having a specific gravity smaller than that of the toner particles and aqueous medium; a centrifugal concentrating device for applying centrifugal force to the slurry and having a precipitating plate with which the toner particles are precipitated from the slurry and an accommodating section to accommodate a concentrated slurry containing the precipitated toner particles, and an outlet section to deliver impure fine particles and aqueous medium.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: August 21, 2007
    Assignee: Konica Corporation
    Inventors: Akira Ohira, Masafumi Uchida, Yoshiki Nishimori, Shoichiro Ishibashi
  • Publication number: 20050089784
    Abstract: Disclosed is a production method of an electrophotographic toner, which comprises toner particles comprising a resin and a colorant. The method comprises a step of forming toner particles in an aqueous medium, and processing an aqueous medium containing the toner particles or a component of the toner particles by gas bubbles.
    Type: Application
    Filed: August 23, 2004
    Publication date: April 28, 2005
    Inventors: Akira Ohira, Junji Ujihara, Shoichiro Ishibashi, Kentarou Yamawaki
  • Publication number: 20030194629
    Abstract: An apparatus for producing toner for developing an electrostatic latent image, is provided with an inlet section to receive a slurry containing toner particles, impure fine particles having a specific gravity smaller than that of the toner particles and aqueous medium; a centrifugal concentrating device for applying centrifugal force to the slurry and having a precipitating plate with which the toner particles are precipitated from the slurry and an accommodating section to accommodate a concentrated slurry containing the precipitated toner particles, and
    Type: Application
    Filed: March 18, 2003
    Publication date: October 16, 2003
    Inventors: Akira Ohira, Masafumi Uchida, Yoshiki Nishimori, Shoichiro Ishibashi
  • Patent number: 6602644
    Abstract: A toner for developing an electrostatic latent image is disclosed. The toner comprises a resin, a colorant and a releasing agent or a crystalline polyester compound, and the toner has crushability index from 0.1 to 0.8.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: August 5, 2003
    Assignee: Konica Corporation
    Inventors: Asao Matsushima, Meizo Shirose, Tsuyoshi Uchida, Hiroyuki Yamada, Akira Ohira, Shoichiro Ishibashi, Shigenori Kohno
  • Publication number: 20030129519
    Abstract: A production method of electrostatic latent image developing toner, comprising: a colored particle forming step of forming colored particles in water-based medium; a first separation step of separating the colored particles from the water-based medium; a dispersing step of dispersing the colored particles into a washing medium; a skimming step of skimming impurities other than the colored particles together with at least a part of the washing medium, the impurities drifting on the washing medium; and a drying step of dry the colored particle so as to make the water content of the colored particles being 3% or less.
    Type: Application
    Filed: November 26, 2002
    Publication date: July 10, 2003
    Inventors: Shoichiro Ishibashi, Ken Ohmura, Akira Ohira, Masafumi Uchida
  • Publication number: 20020037468
    Abstract: A toner for developing an electrostatic latent image is disclosed. The toner comprises a resin, a colorant and a releasing agent or a crystalline polyester compound, and the toner has crushability index from 0.1 to 0.8.
    Type: Application
    Filed: July 23, 2001
    Publication date: March 28, 2002
    Inventors: Asao Matsushima, Meizo Shirose, Tsuyoshi Uchida, Hiroyuki Yamada, Akira Ohira, Shoichiro Ishibashi, Shigenori Kohno
  • Patent number: 5837414
    Abstract: Disclosed is a toner for developing an electrostatic latent image, comprising colored particles containing a colorant and a binder resin, and fine particles, wherein said fine particles have a releasing index of 10 to 50 in terms of a turbidity.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: November 17, 1998
    Assignee: Konica Corporation
    Inventors: Ryuji Kitani, Meizo Shirose, Tatsuya Nagase, Shoichiro Ishibashi