Patents by Inventor Susumu Yamaura

Susumu Yamaura 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).

  • Process for preparation of a transfer sheet for electrostatic photography or printing
    Patent number: 4328265
    Abstract: A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) a thermoplastic acrylic polymer having a carboxyl group content of 2 to 30% by weight and (B) a thermosetting resin reactive with the acrylic polymer (A), is produced by coating on at least one surface of the substrate an aqueous composition containing the thermoplastic acrylic polymer in the form of an aqueous emulsion and the thermosetting resin in the form of an aqueous solution and drying the coated substrate to form a toner-receiving layer on the surface of the substrate.
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: May 4, 1982
    Assignee: Mita Industrial Company Limited
    Inventors: Mamoru Kato, Susumu Yamaura, Yasutoki Kamezawa, Tatsuo Aizawa
  • Transfer sheet and process for preparation thereof
    Patent number: 4245025
    Abstract: A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) 100 parts by weight of thermoplastic acrylic-styrene copolymer and (B) 10 to 100 parts by weight of dry method finely divided silica is disclosed.In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency without broadening of contours of the image. This transfer sheet has feel and touch quite similar to those of ordinary paper and is very excellent in graphic characteristics.
    Type: Grant
    Filed: September 8, 1978
    Date of Patent: January 13, 1981
    Assignee: Mita Industrial Company Limited
    Inventors: Mamoru Kato, Susumu Yamaura, Yasutoki Kamezawa, Tatsuo Aizawa
  • Transfer sheet with toner-receiving layer of thermoplastic and thermosetting polymers
    Patent number: 4168338
    Abstract: A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) a thermoplastic acrylic polymer having a carboxyl group content of 2 to 30% by weight and (B) a thermosetting resin reactive with the acrylic polymer (A), and a process for preparing this transfer sheet by using an aqueous coating composition are disclosed. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency.
    Type: Grant
    Filed: September 9, 1977
    Date of Patent: September 18, 1979
    Assignee: Mita Industrial Company Limited
    Inventors: Mamoru Kato, Susumu Yamaura, Yasutoki Kamezawa, Tatsuo Aizawa