Patents by Inventor Hiroshi Hamakawa

Hiroshi Hamakawa 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).

  • Discharging roller, method of manufacturing the same, and recording apparatus incorporating the same
    Publication number: 20040234317
    Abstract: In order to manufacture a discharging roller which discharges a recording medium from a recording apparatus, there are a first die formed with a first recess extending in an axial direction of a shaft portion of the discharging roller, and a second die formed with a second recess extending in the axial direction. The first die and the second die are combined such that the first recess and the second recess face to form a continuous cavity. Synthetic resin is injected into the cavity to mold a bore portion of the shaft portion.
    Type: Application
    Filed: June 29, 2004
    Publication date: November 25, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoshi Noda, Takao Kanzawa, Hiroshi Hamakawa
  • Discharging roller, method of manufacturing the same, and recording apparatus incorporating the same
    Publication number: 20040234318
    Abstract: In order to manufacture a discharging roller which discharges a recording medium from a recording apparatus, there are a first die formed with a first recess extending in an axial direction of a shaft portion of the discharging roller, and a second die formed with a second recess extending in the axial direction. The first die and the second die are combined such that the first recess and the second recess face to form a continuous cavity. Synthetic resin is injected into the cavity to mold a bore portion of the shaft portion.
    Type: Application
    Filed: June 29, 2004
    Publication date: November 25, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoshi Noda, Takao Kanzawa, Hiroshi Hamakawa
  • Discharging roller, method of manufacturing the same, and recording apparatus incorporating the same
    Publication number: 20030232157
    Abstract: In order to manufacture a discharging roller which discharges a recording medium from a recording apparatus, there are a first die formed with a first recess extending in an axial direction of a shaft portion of the discharging roller, and a second die formed with a second recess extending in the axial direction. The first die and the second die are combined such that the first recess and the second recess face to form a continuous cavity. Synthetic resin is injected into the cavity to mold a bore portion of the shaft portion.
    Type: Application
    Filed: March 14, 2003
    Publication date: December 18, 2003
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoshi Noda, Takao Kanzawa, Hiroshi Hamakawa