Patents by Inventor Masami Eda

Masami Eda 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).

  • Nozzle for jet mill
    Patent number: 5765766
    Abstract: A nozzle for connecting between a jet stream spout and a pulverizing room of a jet mill. The nozzle has two nozzle parts. One nozzle part has the shape of a truncated cone with a first cone angle and is located at a jet stream spout side. The other nozzle part has the shape of a truncated cone with a second cone angle different from the first cone angle and is located at a pulverizing room side of the first nozzle part.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: June 16, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Hideyuki Yoshida, Akihiro Nakamura, Hiroshi Nakamura, Masayuki Nakama, Masami Eda
  • Toner for developing electrostatic latent images with wax particles of spherical shape and of small size uniformly dispersed in binder resin
    Patent number: 5759732
    Abstract: A toner for developing electrostatic latent images is provided which contains wax particles of a spherical shape and of a small particle size uniformly distributed in binder resin.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: June 2, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Akihiro Nakamura, Hiroshi Nakamura, Hideyuki Yoshida, Masami Eda
  • Powder filling method
    Patent number: 5749401
    Abstract: In a powder filling method for supplying the powder from a powder supply hopper into a container, the air inside the hopper and/or the container is pressured and then restored to an atmospheric pressure by discharging the pressured air in the hopper and/or the container. With this method, even a powder of an inferior filling performance can be filled into a container to a high density.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: May 12, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Nozomi Shinya, Masami Eda
  • One-component developing device with system for removing surplus toner
    Patent number: 5568236
    Abstract: An one-component developing device includes an electrically conductive member which is located in a region extending from a position downstream, with respect to a moving direction of a surface of a toner carrying member, to a developing region, and is in contact with the surface of the toner carrying member. A surface of the electrically conductive member contacting the developing sleeve is formed of material, of which charge polarity is shifted to the same polarity side as a regular charge polarity of the toner in view of charge series, and which contains highly conductive material dispersed therein.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: October 22, 1996
    Assignee: Minolta Co., Ltd.
    Inventors: Hiroshi Toda, Akihiro Kawasaki, Masami Eda, Shinichi Takemoto, Tamotsu Sakuraba
  • Electrophotographic image forming apparatus with reversal development
    Patent number: 5049935
    Abstract: An electrophotographic image forming apparatus with reversal development system, wherein a photosensitive member is charged to first polarity by a first charger and then charged to second polarity opposite to the first polarity by a second charger which is provided at downstream side of the first charger with respect to the rotational direction of the photosensitive member prior to an image formation so as to form uniform images regardless of the number of image formation.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: September 17, 1991
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Hitoshi Saito, Masami Eda
  • Toner bottle
    Patent number: D403014
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: December 22, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Akihiro Kura, Masami Eda, Keisuke Ito