Patents by Inventor Yusuke KURANO

Yusuke KURANO 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).

  • Electrostatic latent image developing carrier
    Patent number: 10234782
    Abstract: Carrier particles each include a carrier core having recesses in a surface thereof, and first and second coat layers covering the surface of the carrier core. The first and second coat layers are in a multi-layer structure in which the first coat layer and the second coat layer cover the surface of the carrier core in the stated order. The first coat layer entirely covers the surface of the carrier core. The second coat layer selectively covers regions of a surface of the first coat layer that correspond to the recesses in the surface of the carrier core. The first coat layer contains a first resin. The second coat layer contains a second resin. The second coat layer has a lower electric resistance than the first coat layer.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: March 19, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yusuke Kurano
  • ELECTROSTATIC LATENT IMAGE DEVELOPING CARRIER
    Publication number: 20180329331
    Abstract: Carrier particles each include a carrier core having recesses in a surface thereof, and first and second coat layers covering the surface of the carrier core. The first and second coat layers are in a multi-layer structure in which the first coat layer and the second coat layer cover the surface of the carrier core in the stated order. The first coat layer entirely covers the surface of the carrier core. The second coat layer selectively covers regions of a surface of the first coat layer that correspond to the recesses in the surface of the carrier core. The first coat layer contains a first resin. The second coat layer contains a second resin. The second coat layer has a lower electric resistance than the first coat layer.
    Type: Application
    Filed: May 8, 2018
    Publication date: November 15, 2018
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Yusuke KURANO
  • Image formation method
    Patent number: 9594325
    Abstract: A two-component developer includes a toner and a carrier. The toner includes a plurality of toner particles. The carrier includes a plurality of carrier particles. Each of the toner particles includes a toner core and a shell layer disposed over the surface of the toner core. The toner has a charge decay constant of at least 0.020 and no greater than 0.050 as measured with the toner particles in an external additive-free state. The carrier has a volume resistivity of at least 1.0×1012 ?·cm.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 14, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yusuke Kurano
  • TWO-COMPONENT DEVELOPER IMAGE INFORMING APPARATUS, AND IMAGE FORMATION METHOD
    Publication number: 20160054672
    Abstract: A two-component developer includes a toner and a carrier. The toner includes a plurality of toner particles. The carrier includes a plurality of carrier particles. Each of the toner particles includes a toner core and a shell layer disposed over the surface of the toner core. The toner has a charge decay constant of at least 0.020 and no greater than 0.050 as measured with the toner particles in an external additive-free state. The carrier has a volume resistivity of at least 1.0×1012 ?·cm.
    Type: Application
    Filed: August 18, 2015
    Publication date: February 25, 2016
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Yusuke KURANO
  • Two-component developer and method for producing two-component developer
    Patent number: 9256150
    Abstract: A two-component developer of the present disclosure contains a carrier and toner particles. The carrier includes a carrier core, a first layer coating a surface of the carrier core, and a second layer coating a surface of the first layer. The first layer contains a fluorine-based resin, and the second layer contains a polyamide-imide resin and/or a melamine resin. The toner particles each include a toner core containing a binder resin and a shell layer coating a surface of the toner core. The shell layer contains a thermosetting resin.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: February 9, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yusuke Kurano, Hiroaki Moriyama
  • TWO-COMPONENT DEVELOPER AND METHOD FOR PRODUCING TWO-COMPONENT DEVELOPER
    Publication number: 20150104744
    Abstract: A two-component developer of the present disclosure contains a carrier and toner particles. The carrier includes a carrier core, a first layer coating a surface of the carrier core, and a second layer coating a surface of the first layer. The first layer contains a fluorine-based resin, and the second layer contains a polyamide-imide resin and/or a melamine resin. The toner particles each include a toner core containing a binder resin and a shell layer coating a surface of the toner core. The shell layer contains a thermosetting resin.
    Type: Application
    Filed: October 13, 2014
    Publication date: April 16, 2015
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Yusuke KURANO, Hiroaki MORIYAMA