Patents by Inventor Tomoko Kino

Tomoko Kino 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).

  • Belt driving roller including electroviscous force developing member, and belt driving device using same
    Patent number: 9665046
    Abstract: Provided is a belt driving roller for a belt driving device configured to drive and rotate an endless belt with at least one driving roller of a plurality of rollers over which the belt is hung by its internal surface, wherein the belt driving roller includes an electroviscosity retaining member of which surface viscosity force reversibly changes under an effect of an electric field.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: May 30, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Jun Aoto, Masaki Yoshino, Tomoko Kino, Tojiro Aoyama, Yuta Shimizu
  • BELT DRIVING ROLLER INCLUDING ELECTROVISCOUS FORCE DEVELOPING MEMBER, AND BELT DRIVING DEVICE USING SAME
    Publication number: 20160061300
    Abstract: Provided is a belt driving roller for a belt driving device configured to drive and rotate an endless belt with at least one driving roller of a plurality of rollers over which the belt is hung by its internal surface, wherein the belt driving roller includes an electroviscosity retaining member of which surface viscosity force reversibly changes under an effect of an electric field.
    Type: Application
    Filed: August 18, 2015
    Publication date: March 3, 2016
    Applicant: RICOH COMPANY, LTD.
    Inventors: Jun Aoto, Masaki Yoshino, Tomoko Kino, Tojiro Aoyama, Yuta Shimizu
  • Overcoat composition for electrophotography, electrophotographic image forming method and electrophotographic image forming apparatus
    Patent number: 9052618
    Abstract: An overcoat composition for electrophotography includes at least one of compounds having the following formulae (1) to (3): wherein R1 represents a hydrogen atom or a methyl group; wherein R1 represents a hydrogen atom or a methyl group; and n represents an integer of from 4 to 6; and wherein R1 represents a hydrogen atom or a methyl group; and a and b independently represent an integer of from 1 to 5 on the condition that a+b is from 4 to 6.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: June 9, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tsuyoshi Asami, Masato Iio, Masaki Yoshino, Tomoko Kino
  • OVERCOAT COMPOSITION FOR ELECTROPHOTOGRAPHY, ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS
    Publication number: 20140011949
    Abstract: An overcoat composition for electrophotography includes at least one of compounds having the following formulae (1) to (3): wherein R1 represents a hydrogen atom or a methyl group; wherein R1 represents a hydrogen atom or a methyl group; and n represents an integer of from 4 to 6; and wherein R1 represents a hydrogen atom or a methyl group; and a and b independently represent an integer of from 1 to 5 on the condition that a+b is from 4 to 6.
    Type: Application
    Filed: June 7, 2013
    Publication date: January 9, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tsuyoshi Asami, Masato IIo, Masaki Yoshino, Tomoko Kino
  • Anisotropic magnetic material-dispersed resin carrier, electrophotographic developer, and developing device
    Patent number: 8603718
    Abstract: An anisotropic magnetic material-dispersed resin carrier including: fine magnetic particles; and a binder resin in which at least the fine magnetic particles are dispersed, wherein the anisotropic magnetic material-dispersed resin carrier has a magnetic anisotropy where magnetic fields of the fine magnetic particles are orientated in the same direction, and wherein the anisotropic magnetic material-dispersed resin carrier has a saturation magnetization of 16 emu/g to 30 emu/g, a coercive force of 15 kA/m to 40 kA/m, and a number average particle diameter of 15 ?m or more but less than 100 ?m.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: December 10, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazumi Suzuki, Masaki Yoshino, Hisao Kurosu, Tatsuya Morita, Tomoko Kino, Shingo Sakashita
  • ANISOTROPIC MAGNETIC MATERIAL-DISPERSED RESIN CARRIER, ELECTROPHOTOGRAPHIC DEVELOPER, AND DEVELOPING DEVICE
    Publication number: 20120202147
    Abstract: An anisotropic magnetic material-dispersed resin carrier including: fine magnetic particles; and a binder resin in which at least the fine magnetic particles are dispersed, wherein the anisotropic magnetic material-dispersed resin carrier has a magnetic anisotropy where magnetic fields of the fine magnetic particles are orientated in the same direction, and wherein the anisotropic magnetic material-dispersed resin carrier has a saturation magnetization of 16 emu/g to 30 emu/g, a coercive force of 15 kA/m to 40 kA/m, and a number average particle diameter of 15 ?m or more but less than 100 ?m.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 9, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kazumi SUZUKI, Masaki Yoshino, Hisao Kurosu, Tatsuya Morita, Tomoko Kino, Shingo Sakashita