Patents by Inventor Tetsuya Taguchi

Tetsuya Taguchi 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).

  • Publication number: 20170242366
    Abstract: An electrostatic charge image developing white toner includes a white toner particle and a yellow toner particle that includes an organic yellow pigment, wherein a content ratio (by number) of the yellow toner particles to all of toner particles included in the toner is from 0.01% by number to 3% by number.
    Type: Application
    Filed: July 28, 2016
    Publication date: August 24, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi KAMIWAKI, Tetsuya TAGUCHI, Masaru TAKAHASHI, Shotaro TAKAHASHI, Tomoaki TANAKA
  • Patent number: 9726996
    Abstract: A white toner includes white toner particles and black toner particles, wherein a content of the black toner particles is from 0.01% by number to less than 1% by number with respect to a total number of an entirety of toner particles.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: August 8, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Satoshi Kamiwaki, Tetsuya Taguchi, Shotaro Takahashi, Masaru Takahashi
  • Publication number: 20170090319
    Abstract: A white toner includes white toner particles and black toner particles, wherein a content of the black toner particles is from 0.01% by number to less than 1% by number with respect to a total number of an entirety of toner particles.
    Type: Application
    Filed: March 4, 2016
    Publication date: March 30, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi KAMIWAKI, Tetsuya TAGUCHI, Shotaro TAKAHASHI, Masaru TAKAHASHI
  • Publication number: 20170090320
    Abstract: A brilliant toner includes a brilliant pigment and a binder resin, wherein, when the toner is subjected to a differential scanning calorimetry measurement performed by raising a temperature of the toner from 0° C. to 150° C. in a first temperature rising process, cooling the temperature from 150° C. to 0° C., and then raising the temperature from 0° C. to 150° C. in a second temperature rising process, the toner exhibits an endothermic peak P1 in a range of 50° C. to 65° C. in the first temperature rising process, an endothermic peak P2 in a range of 50° C. to 65° C. in the second temperature rising process, and a ratio (Q2/Q1) between a total endothermic quantity Q1 in a range of 50° C. to 65° C. in the first temperature rising process and a total endothermic quantity Q2 in a range of 50° C. to 65° C. in the second temperature rising process is from 0.01 to 0.30.
    Type: Application
    Filed: February 25, 2016
    Publication date: March 30, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tetsuya TAGUCHI, Shotaro TAKAHASHI, Daisuke NOGUCHI
  • Publication number: 20160216626
    Abstract: There is provided a brilliant toner containing a toner particle containing a binder resin, and flat-shaped brilliant pigments, wherein the number of the brilliant pigment contained is from 3.5 to 15 and the plurality of brilliant pigments are oriented mutually in the same direction, and an electrostatic image developer containing the brilliant toner and a carrier, and a toner cartridge storing the brilliant toner, which is able to be attached to and detached from an image forming apparatus.
    Type: Application
    Filed: July 29, 2015
    Publication date: July 28, 2016
    Inventors: Tetsuya TAGUCHI, Atsushi SUGITATE, Shinya SAKAMOTO, Satomi HARA
  • Patent number: 9389527
    Abstract: An irregular shape inorganic particle satisfies the following formulas (1) and (2), 1/17?A/B? 1/13??(1) 1.2?C/D?1.5??(2) wherein A represents a distance between the center of a circumscribed rectangle, in which lines sandwiching a projected image and being parallel to an absolute maximum length of the projected image of inorganic fine particles are long sides and lines sandwiching the projected image and being perpendicular to the absolute maximum length are short sides, and the center of gravity of the projected image, B represents the absolute maximum length, C represents a length of a long side of the circumscribed rectangle, and D represents a length of a short side of the circumscribed rectangle.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: July 12, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Eiji Kawakami, Tetsuya Taguchi
  • Patent number: 9239527
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin containing a polyester resin forming a sea part and a vinyl resin forming an island part of a sea-island structure, a first release agent existing in the sea part in a domain state, and a second release agent existing in the island part in a domain state, wherein when a cross-sectional area of the second release agent is set to A1 and a cross-sectional area of the first release agent is set to B1 in a cross section of the toner particles, a relationship of 0.2?A1/B1?0.8 is satisfied.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: January 19, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tetsuya Taguchi, Shinya Sakamoto, Kosaku Yoshimura, Satoshi Yoshida, Shinya Nakashima
  • Publication number: 20150277253
    Abstract: An irregular shape inorganic particle satisfies the following formulas (1) and (2), 1/17?A/B? 1/13??(1) 1.2?C/D?1.5??(2) wherein A represents a distance between the center of a circumscribed rectangle, in which lines sandwiching a projected image and being parallel to an absolute maximum length of the projected image of inorganic fine particles are long sides and lines sandwiching the projected image and being perpendicular to the absolute maximum length are short sides, and the center of gravity of the projected image, B represents the absolute maximum length, C represents a length of a long side of the circumscribed rectangle, and D represents a length of a short side of the circumscribed rectangle.
    Type: Application
    Filed: January 14, 2015
    Publication date: October 1, 2015
    Inventors: Eiji KAWAKAMI, Tetsuya TAGUCHI
  • Patent number: 9134636
    Abstract: An electrostatic charge image developing toner includes a binder resin and a release agent, and when a peak temperature during a first temperature increase and a peak temperature during a second temperature increase, that are obtained by differential scanning calorimetry including performing the first temperature increase at 10° C./min after holding at 10° C., performing cooling at ?10° C./min, performing a heat treatment for 24 hours at 50° C., and performing the second temperature increase at 10° C./min, are represented by Tt1 and Tt2(50° C.), respectively, the following Expression (1) is satisfied: Tt1<Tt2(50° C.).
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: September 15, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tetsuya Taguchi, Satoshi Yoshida, Shinya Nakashima, Shinya Sakamoto, Kosaku Yoshimura, Emi Miyata
  • Patent number: 9116449
    Abstract: An electrostatic charge image developing toner includes an amorphous polyester resin and a crystalline polyester resin as a binder resin, and by differential scanning calorimetry, which undergoes processes of a first temperature rise, cooling at a rate of ?10° C./min and a second temperature rise, an endothermic peak (1) derived from a resin in which at least the amorphous polyester resin and the crystalline polyester resin are compatible is present in the first temperature rise, an exothermic peak having an intensity of 0.1 J/g or more is not present during the first temperature rise, and at least one exothermic peak (2) is present in a temperature range which is lower than that of the endothermic peak (1) by from 5° C. to 15° C. during the second temperature rise.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 25, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shinya Sakamoto, Satoshi Yoshida, Shinya Nakashima, Tetsuya Taguchi
  • Publication number: 20150044601
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin containing a polyester resin forming a sea part and a vinyl resin forming an island part of a sea-island structure, a first release agent existing in the sea part in a domain state, and a second release agent existing in the island part in a domain state, wherein when a cross-sectional area of the second release agent is set to A1 and a cross-sectional area of the first release agent is set to B1 in a cross section of the toner particles, a relationship of 0.2?A1/B1?0.8 is satisfied.
    Type: Application
    Filed: February 26, 2014
    Publication date: February 12, 2015
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tetsuya TAGUCHI, Shinya SAKAMOTO, Kosaku YOSHIMURA, Satoshi YOSHIDA, Shinya NAKASHIMA
  • Patent number: 8916321
    Abstract: An electrostatic charge image developing toner includes toner particles, and an external additive containing titanate compound particles having an iron content of from greater than 1200 ppm to 6000 ppm.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: December 23, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Eiji Kawakami, Tetsuya Taguchi, Hirokazu Hamano
  • Publication number: 20140287353
    Abstract: An electrostatic charge image developing toner includes an amorphous polyester resin and a crystalline polyester resin as a binder resin, and by differential scanning calorimetry, which undergoes processes of a first temperature rise, cooling at a rate of ?10° C./min and a second temperature rise, an endothermic peak (1) derived from a resin in which at least the amorphous polyester resin and the crystalline polyester resin are compatible is present in the first temperature rise, an exothermic peak having an intensity of 0.1 J/g or more is not present during the first temperature rise, and at least one exothermic peak (2) is present in a temperature range which is lower than that of the endothermic peak (1) by from 5° C. to 15° C. during the second temperature rise.
    Type: Application
    Filed: September 13, 2013
    Publication date: September 25, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinya SAKAMOTO, Satoshi YOSHIDA, Shinya NAKASHIMA, Tetsuya TAGUCHI
  • Publication number: 20140287352
    Abstract: An electrostatic charge image developing toner includes toner particles, and an external additive containing titanate compound particles having an iron content of from greater than 1200 ppm to 6000 ppm.
    Type: Application
    Filed: August 13, 2013
    Publication date: September 25, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Eiji KAWAKAMI, Tetsuya TAGUCHI, Hirokazu HAMANO
  • Publication number: 20140255839
    Abstract: An electrostatic charge image developing toner includes a binder resin and a release agent, and when a peak temperature during a first temperature increase and a peak temperature during a second temperature increase, that are obtained by differential scanning calorimetry including performing the first temperature increase at 10° C./min after holding at 10° C., performing cooling at ?10° C./min, performing a heat treatment for 24 hours at 50° C., and performing the second temperature increase at 10° C./min, are represented by Tt1 and Tt2(50° C.), respectively, the following Expression (1) is satisfied: Tt1<Tt2(50° C.).
    Type: Application
    Filed: September 13, 2013
    Publication date: September 11, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tetsuya TAGUCHI, Satoshi YOSHIDA, Shinya NAKASHIMA, Shinya SAKAMOTO, Kosaku YOSHIMURA, Emi MIYATA
  • Patent number: 8758967
    Abstract: A transparent toner for developing an electrostatic latent image includes toner particles containing a binder resin; and an external additive containing cerium oxide, in which a content of cerium in all toner particles is from 0.05% by weight to 0.20% by weight, the cerium oxide contains a praseodymium, and a content of praseodymium in all toner particles is from 0.001% by weight to 0.050% by weight.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: June 24, 2014
    Assignee: Fuji Xerox Co., Ltd
    Inventors: Koji Sasaki, Masanobu Ninomiya, Tetsuya Taguchi, Atsushi Sugawara, Yukiaki Nakamura
  • Patent number: 8728693
    Abstract: A toner for developing an electrostatic image, includes: colored particles containing a colorant and a binder resin, and two or more kinds of inorganic particles that are externally added to a surface of the colored particles, in which the two or more kinds of inorganic particles contain titanium-containing particles and silica-containing particles, an exposure ratio of the surface of the colored particles is about 25% or less, and a ratio of the titanium-containing particles that are in contact with the colored particles is about 15% by number or less.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: May 20, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hirokazu Hamano, Tetsuya Taguchi, Asafumi Fujita, Hiroshi Kamada, Masahiro Takagi
  • Patent number: 8708336
    Abstract: A drive controlling unit causes an ascending and descending unit to lower a recording medium discharge tray, and then causes raising of the recording medium discharge tray until detection of the upper surface of the recording medium by an upper surface detection sensor. A determining unit determines whether a raising time of the recording medium discharge tray measured by a measuring unit is a predetermined abnormal time. When the raising time is determined by the determining unit not to be the abnormal time, the drive controlling unit causes the recording medium discharge unit to execute the subsequent recording medium discharge into the recording medium discharge tray. When the raising time is determined by the determining unit to be the abnormal time, the drive controlling unit causes the recording medium discharge unit to stop the subsequent recording medium discharge into the recording medium discharge tray.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 29, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Tetsuya Taguchi
  • Patent number: 8652726
    Abstract: A toner for developing an electrostatic image, includes: colored particles containing a colorant and a binder resin, and two or more kinds of inorganic particles that are externally added to a surface of the colored particles, in which the two or more kinds of inorganic particles contain titanium-containing particles and silica-containing particles, an exposure ratio of the surface of the colored particles is about 25% or less, and a ratio of the silica-containing particles that are in contact with the colored particles is about 10% by number or less.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: February 18, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Asafumi Fujita, Hirokazu Hamano, Tetsuya Taguchi, Hiroshi Kamada, Masahiro Takagi
  • Patent number: RE45970
    Abstract: The invention provides a toner for electrostatic image development, containing a toner particle and external additive particles adhered to the surface of the toner particle, each of the external additive particles being constituted of plural irreversibly coalesced primary particles.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: April 12, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tetsuya Taguchi, Motoko Sakai, Jun Igarashi, Masahiro Takagi