Patents by Inventor Shinya Nakashima

Shinya Nakashima 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: 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
  • 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: 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: 8722296
    Abstract: The invention provides a toner for electrostatic image development having a binder resin containing a amorphous polyester resin and a crystalline polyester resin, and a coloring agent, and satisfying the following relationship (1): SP(L)>SP(H)>SP(C)??(1) wherein SP(H) is the solubility parameter of a resin contained in an elution fraction F (0-10) from the beginning of elution of W1 until 10% of elution of W1 when W1 is the whole area of an elution curve on a gel permeation chromatograph measured for an acetone-soluble fraction; SP(L) is the solubility parameter of a resin contained in an elution fraction F (80-100) from 80% to 100% of the elution of W1; and SP(C) is the solubility parameter of the crystalline polyester resin.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: May 13, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Noriyuki Mizutani, Shinya Nakashima, Takeshi Iwanaga, Takafumi Koide, Susumu Yoshino
  • Publication number: 20130143151
    Abstract: An electrostatic charge image developing toner includes: bright pigment particles; and a binder resin, and the electrostatic charge image developing toner has a main peak and at least one peak or shoulder that is higher in molecular weight than the main peak in a molecular weight distribution of a tetrahydrofuran-soluble component that is obtained through gel permeation chromatography measurement, and satisfies the following formula: 2?A/B?100, wherein A is reflectance at an acceptance angle of +30° that is measured when a solid image is formed using an electrostatic charge image developing toner and the image is irradiated with incident light at an incidence angle of ?45° by the use of a variable-angle photometer, and B is reflectance at an acceptance angle of ?30° that is measured when the image is irradiated with incident light at an incidence angle of ?45° by the use of a variable-angle photometer.
    Type: Application
    Filed: April 24, 2012
    Publication date: June 6, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinya NAKASHIMA, Masaru TAKAHASHI, Atsushi SUGITATE, Shotaro TAKAHASHI
  • Patent number: 8440378
    Abstract: An electrostatic image developing toner includes a binding resin and a release agent, wherein an organic silicon compound including a siloxane bond is present in a domain of the release agent.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: May 14, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masaru Takahashi, Shinya Nakashima, Shuji Sato
  • Patent number: 8216757
    Abstract: There is provided a toner for electrostatic charge image development, which includes a binder resin that includes a non-crystalline polyester resin and a crystalline polyester resin, and a colorant, wherein in a measurement of an acetone-soluble fraction of the toner by gel permeation chromatography, in which W1 represents the total area of an elution curve of the acetone-soluble fraction, F(0-10) represents an eluate corresponding to from the beginning of the elution to 10% elution of W1 over time, and F(80-100) represents an eluate corresponding to from 80% elution to 100% elution of W1 over time, the amount of an aliphatic unsaturated dicarboxylic acid-derived component of the resins contained in the eluate F(0-10) is in the range of from about 0 mol % to about 10 mol % relative to the total amount of the acid-derived components of the resins contained in the eluate F(0-10), and the amount of the aliphatic unsaturated dicarboxylic acid-derived component of the resins contained in the eluate F(80-100) is in
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: July 10, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Noriyuki Mizutani, Shinya Nakashima, Takeshi Iwanaga, Takafumi Koide, Susumu Yoshino
  • Patent number: 8198813
    Abstract: A plasma display panel including a front panel including a front glass substrate, a display electrode formed on the substrate, a dielectric layer formed to cover the display electrode, and a protective layer formed on the dielectric layer; and a rear panel facing the front panel so that discharge space is formed and including an address electrode formed in a direction intersecting the display electrode, and a barrier rib for partitioning the discharge space. The protective layer includes a base film on the dielectric layer and aggregated particles of a plurality of aggregated metal-oxide crystal particles attached to the base film so that they are distributed over an entire surface. The aggregated particles are attached so that the number of aggregated particles per 10000 ?m2 is not less than 45 and not more than 350.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: June 12, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshinao Ooe, Shinichiro Ishino, Yuichiro Miyamae, Koyo Sakamoto, Shinya Nakashima, Ryoichi Inoue, Kaname Mizokami
  • Publication number: 20110236817
    Abstract: An electrostatic image developing toner includes a binding resin and a release agent, wherein an organic silicon compound including a siloxane bond is present in a domain of the release agent.
    Type: Application
    Filed: August 24, 2010
    Publication date: September 29, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masaru Takahashi, Shinya Nakashima, Shuji Sato
  • Publication number: 20110188910
    Abstract: A fixing device is configured to fix a toner image formed on a recording medium and includes a fixing roll, a separation claw in contact with the fixing roll, and a pressure member disposed to face the fixing roll. The fixing roll includes a metallic core and a surface layer formed on the metallic core. The surface layer is an electroless nickel plating layer containing a boron compound and a phosphorus compound.
    Type: Application
    Filed: August 18, 2010
    Publication date: August 4, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinya NAKASHIMA, Shuji Sato, Masaru Takahashi
  • Patent number: 7892717
    Abstract: The invention provides a toner for electrostatic image development having at least a binder resin and a colorant and having an existence ratio of an IA Group element, from which hydrogen is excluded, measured by XPS (X-ray Photoelectron Spectroscopy) in a range of about 0.03 to 1.0 atom % and a total of existence ratios of an IIA Group element, an IIIB Group element and an IVB Group element, from which carbon is excluded, measured by XPS in a range of about 0.05 to 2.0 atom %. The invention further provides an electrostatic image developer having at least a carrier and the toner, and an image forming method including at least developing an electrostatic latent image with a developer containing at least the toner to form a toner image.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: February 22, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shuji Sato, Hiroshi Nakazawa, Masanobu Ninomiya, Takeshi Shoji, Eiji Kawakami, Atsushi Sugawara, Shinya Nakashima
  • Publication number: 20100127622
    Abstract: A plasma display panel including a front panel including a front glass substrate, a display electrode formed on the substrate, a dielectric layer formed to cover the display electrode, and a protective layer formed on the dielectric layer; and a rear panel facing the front panel so that discharge space is formed and including an address electrode formed in a direction intersecting the display electrode, and a barrier rib for partitioning the discharge space. The protective layer includes a base film on the dielectric layer and aggregated particles of a plurality of aggregated metal-oxide crystal particles attached to the base film so that they are distributed over an entire surface. The aggregated particles are attached so that the number of aggregated particles per 10000 ?m2 is not less than 45 and not more than 350.
    Type: Application
    Filed: January 27, 2009
    Publication date: May 27, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshinao Ooe, Shinichiro Ishino, Yuichiro Miyamae, Koyo Sakamoto, Shinya Nakashima, Ryoichi Inoue, Kaname Mizokami
  • Publication number: 20090155707
    Abstract: There is provided a toner for electrostatic charge image development, which includes a binder resin that includes a non-crystalline polyester resin and a crystalline polyester resin, and a colorant, wherein in a measurement of an acetone-soluble fraction of the toner by gel permeation chromatography, in which W1 represents the total area of an elution curve of the acetone-soluble fraction, F(0-10) represents an eluate corresponding to from the beginning of the elution to 10% elution of W1 over time, and F (80-100) represents an eluate corresponding to from 80% elution to 100% elution of W1 over time, the amount of an aliphatic unsaturated dicarboxylic acid-derived component of the resins contained in the eluate F(0-10) is in the range of from about 0 mol % to about 10 mol % relative to the total amount of the acid-derived components of the resins contained in the eluate F(0-10), and the amount of the aliphatic unsaturated dicarboxylic acid-derived component of the resins contained in the eluate F(80-100) is i
    Type: Application
    Filed: July 15, 2008
    Publication date: June 18, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Noriyuki MIZUTANI, Shinya NAKASHIMA, Takeshi IWANAGA, Takafumi KOIDE, Susumu YOSHINO
  • Publication number: 20080131802
    Abstract: The invention provides a toner for electrostatic image development having a binder resin containing a amorphous polyester resin and a crystalline polyester resin, and a coloring agent, and satisfying the following relationship (1): SP(L)>SP(H)>SP(C) ??(1) wherein SP(H) is the solubility parameter of a resin contained in an elution fraction F (0-10) from the beginning of elution of W1 until 10% of elution of W1 when W1 is the whole area of an elution curve on a gel permeation chromatograph measured for an acetone-soluble fraction; SP(L) is the solubility parameter of a resin contained in an elution fraction F (80-100) from 80% to 100% of the elution of W1; and SP(C) is the solubility parameter of the crystalline polyester resin.
    Type: Application
    Filed: May 16, 2007
    Publication date: June 5, 2008
    Applicant: FUJI XEROX CO., LTD
    Inventors: Noriyuki Mizutani, Shinya Nakashima, Takeshi Iwanaga, Takafumi Koide, Susumu Yoshino
  • Publication number: 20080008944
    Abstract: The invention provides a toner for electrostatic image development having at least a binder resin and a colorant and having an existence ratio of an IA Group element, from which hydrogen is excluded, measured by XPS (X-ray Photoelectron Spectroscopy) in a range of about 0.03 to 1.0 atom % and a total of existence ratios of an IIA Group element, an IIIB Group element and an IVB Group element, from which carbon is excluded, measured by by XPS in a range of about 0.05 to 2.0 atom %. The invention further provides an electrostatic image developer having at least a carrier and the toner, and an image forming method including at least developing an electrostatic latent image with a developer containing at least the toner to form a toner image.
    Type: Application
    Filed: February 16, 2007
    Publication date: January 10, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shuji Sato, Hiroshi Nakazawa, Masanobu Ninomiya, Takeshi Shoji, Eiji Kawakami, Atsushi Sugawara, Shinya Nakashima
  • Publication number: 20060292473
    Abstract: An electrostatic latent image developing toner that is made by adding electrically conductive powder as an external additive to toner particles comprising a binder resin and a colorant, wherein the liberation rate of the electrically conductive powder is from 50 to 90%; and the number average particle size distribution index G of the toner particles, which is represented by the following formula (1), is 1.20 or less. particle size distribution index G=D50/D16??Formula (1) And an electrostatic latent image developing toner that is made by adding a metal oxide as an external additive to toner particles comprising a binder resin and a colorant, wherein the liberation rate of the metal oxide is from 30 to 60%.
    Type: Application
    Filed: December 14, 2005
    Publication date: December 28, 2006
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasuo Kadokura, Yuka Ishihara, Yasuhiro Arima, Atsushi Sugawara, Shinya Nakashima, Masaki Nakamura, Yasuhiro Oya