Patents by Inventor Hideyoshi Niinuma

Hideyoshi Niinuma 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: 9597910
    Abstract: A toner for a thermal transfer printing sheet is advantageous in terms of a fixing property to a release sheet, durability against deformation upon cooling, and a property of holding an image-forming toner, in addition to grindability and chargeability of the toner. The toner for a thermal transfer printing sheet is characterized by comprising a negative-charged crystalline polyester resin, wherein the toner has an average particle size D50 (volume) of 20 to 50 ?m.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: March 21, 2017
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Satoshi Mitsui, Masaru Sato, Hideyoshi Niinuma, Tomohumi Sano, Toshiaki Kanamura
  • Publication number: 20160179023
    Abstract: Provided is a film-forming toner excellent in grindability hand having a sufficient negative chargeability, and facilitate grinding performed in the manufacture. The film-forming toner contains a main resin, and a low-molecular-weight resin having a weight-average molecular weight lower than that of the main resin. The low-molecular-weight resin is one or more resins selected from terpene resins, alicyclic hydrocarbon resins, ?-methylpolystyrene, modified rosin, novolak resins, modified novolak resins, aliphatic hydrocarbon resins, aromatic hydrocarbon resins, copolymerized resins of these resins, esterified modified rosin, a coumarone resin, C5 and C9 petroleum resins, and derivatives thereof. A proportion of the low-molecular-weight resin in the film-forming toner is 5 to 40 mass %. The film-forming toner has an average particle diameter D50 (volume) of 9 to 50 ?m.
    Type: Application
    Filed: February 26, 2016
    Publication date: June 23, 2016
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Hideyoshi NIINUMA, Toshiaki KANAMURA
  • Publication number: 20160176214
    Abstract: A toner for a thermal transfer printing sheet is advantageous in terms of a fixing property to a release sheet, durability against deformation upon cooling, and a property of holding an image-forming toner, in addition to grindability and chargeability of the toner. The toner for a thermal transfer printing sheet is characterized by comprising a negative-charged crystalline polyester resin, wherein the toner has an average particle size D50 (volume) of 20 to 50 ?m.
    Type: Application
    Filed: November 10, 2015
    Publication date: June 23, 2016
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Satoshi MITSUI, Masaru SATO, Hideyoshi NIINUMA, Tomohumi SANO, Toshiaki KANAMURA
  • Patent number: 8822116
    Abstract: An erasable electrophotographic toner includes a binder resin, a near-infrared absorbing material, a decolorizing agent and an organic white pigment.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: September 2, 2014
    Assignees: Casio Electronics Manufacturing Co., Ltd., Casio Computer Co., Ltd.
    Inventors: Hideyoshi Niinuma, Hideki Ikeda, Toshiaki Kanamura
  • Publication number: 20120264044
    Abstract: Disclosed is a negative-chargeable erasable electrophotographic toner including a binder resin, a near infrared absorption dye, a decolorizing agent, a charge controlling agent, and fluororesin particles. The toner is obtained by adding 5 to 20 parts by mass of the fluororesin particles to 100 parts by mass of the binder resin.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 18, 2012
    Applicants: CASIO COMPUTER CO., LTD., CASIO ELECTRONICS MANUFACTURING CO., LTD.
    Inventors: Hideki IKEDA, Hideyoshi Niinuma, Toshiaki Kanamura