Patents by Inventor Rieko Kataoka

Rieko Kataoka 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: 9176401
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains from about 1.0% by weight to about 14.0% by weight of elemental magnesium, wherein an average distribution ratio D of the elemental magnesium in the ferrite particle is from about 1.1 to about 2.0, wherein the average distribution ratio D is defined as an average value of D? of at least 50 ferrite particles, wherein D? is defined as W1/W2, wherein W1 is a weight ratio of elemental magnesium content Mg to elemental iron content Fe, Me/Fe, in a whole cross-section of the ferrite particle, and W2 is a weight ratio of elemental magnesium content Mg to elemental iron content Fe, Me/Fe, in a square, the two opposite vertices of which are located at two points on a diameter of a circle circumscribing the cross-section, each being half a radius distant from the center of the circumscribing circle.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: November 3, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yosuke Tsurumi, Rieko Kataoka
  • Publication number: 20140141371
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains from about 1.0% by weight to about 14.0% by weight of elemental magnesium, wherein an average distribution ratio D of the elemental magnesium in the ferrite particle is from about 1.1 to about 2.0, wherein the average distribution ratio D is defined as an average value of D? of at least 50 ferrite particles, wherein D? is defined as W1/W2, wherein W1 is a weight ratio of elemental magnesium content Mg to elemental iron content Fe, Me/Fe, in a whole cross-section of the ferrite particle, and W2 is a weight ratio of elemental magnesium content Mg to elemental iron content Fe, Me/Fe, in a square, the two opposite vertices of which are located at two points on a diameter of a circle circumscribing the cross-section, each being half a radius distant from the center of the circumscribing circle.
    Type: Application
    Filed: November 26, 2013
    Publication date: May 22, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yosuke TSURUMI, Rieko KATAOKA
  • Patent number: 8679715
    Abstract: An electrostatic image developing toner includes a toner mother particle that contains a binder resin and a releasing agent; and an external additive that contains a zinc compound particle and a silica particle, wherein the zinc compound particle has a number average particle diameter of from about 2.0 ?m to about 10.0 ?m, the silica particle has a number average particle diameter of from about 60 nm to about 250 nm, the number of free zinc compound particles in all toner particles is from about 0.2% by number to about 1.0% by number, and the free zinc compound particle has an average circularity of about 0.6 or less.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: March 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Okita, Rieko Kataoka
  • Patent number: 8577256
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains magnesium element in an amount of about 3.0 wt % or more and about 10.0 wt % or less and manganese element in an amount of about 0.2 wt % or more and less than about. 1.0 wt %; and a resin layer that covers the ferrite particle.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 5, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yosuke Tsurumi, Rieko Kataoka
  • Publication number: 20130017482
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains magnesium element in an amount of about 3.0 wt % or more and about 10.0 wt % or less and manganese element in an amount of about 0.2 wt % or more and less than about. 1.0 wt %; and a resin layer that covers the ferrite particle.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 17, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yosuke TSURUMI, Rieko KATAOKA
  • Patent number: 8293445
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains magnesium element in an amount of about 3.0 wt % or more and about 10.0 wt % or less and manganese element in an amount of about 0.2 wt % or more and less than about 1.0 wt %; and a resin layer that covers the ferrite particle.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: October 23, 2012
    Assignee: Fuji Xerox, Co., Ltd.
    Inventors: Yosuke Tsurumi, Rieko Kataoka
  • Publication number: 20100233608
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains from about 1.0% by weight to about 14.0% by weight of elemental magnesium, wherein an average distribution ratio D of the elemental magnesium in the ferrite particle is from about 1.1 to about 2.0, wherein the average distribution ratio D is defined as an average value of D? of at least 50 ferrite particles, wherein D? is defined as W1/W2, wherein W1 is a weight ratio of elemental magnesium content Mg to elemental iron content Fe, Me/Fe, in a whole cross-section of the ferrite particle, and W2 is a weight ratio of elemental magnesium content Mg to elemental iron content Fe, Me/Fe, in a square, the two opposite vertices of which are located at two points on a diameter of a circle circumscribing the cross-section, each being half a radius distant from the center of the circumscribing circle.
    Type: Application
    Filed: September 10, 2009
    Publication date: September 16, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yosuke TSURUMI, Rieko KATAOKA
  • Patent number: 7776502
    Abstract: A toner for developing an electrostatic charge image, includes: a binder resin formed by reacting a polymerizable aromatic monomer having an ethylenically unsaturated double bond conjugated to an aromatic ring thereof, a nitrogen-containing polymerizable aliphatic monomer having an ethylenically unsaturated double bond and a sulfur-containing aliphatic compound to each other; and a colorant, wherein a ratio (MN/MS) of an amount of nitrogen (MN) to an amount of sulfur (MS) is in a range of from 1.0 to 15.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: August 17, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Norihito Fukushima, Rieko Kataoka, Sakon Takahashi, Toshiyuki Yano
  • Publication number: 20100203441
    Abstract: An electrostatic image developing toner includes toner mother particles that contain a binder resin, a coloring agent, and a release agent; and an external additive that contains a zinc-containing particles, wherein the number of free zinc-containing particles in all toner particles is from about by number to about 1.0% by number, and the free zinc-containing particles have a number average particle size of from about 1.0 ?m to about 3.0 ?m and an average circularity of from about 0.2 to about 0.6.
    Type: Application
    Filed: September 9, 2009
    Publication date: August 12, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Rieko KATAOKA, Masahiro OKITA, Toshiyuki YANO
  • Publication number: 20100203443
    Abstract: An electrostatic image developing toner includes a toner mother particle that contains a binder resin and a releasing agent; and an external additive that contains a zinc compound particle and a silica particle, wherein the zinc compound particle has a number average particle diameter of from about 2.0 ?m to about 10.0 ?m, the silica particle has a number average particle diameter of from about 60 nm to about 250 nm, the number of free zinc compound particles in all toner particles is from about 0.2% by number to about 1.0% by number, and the free zinc compound particle has an average circularity of about 0.6 or less.
    Type: Application
    Filed: August 28, 2009
    Publication date: August 12, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro Okita, Rieko Kataoka
  • Publication number: 20100183970
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains magnesium element in an amount of about 3.0 wt % or more and about 10.0 wt % or less and manganese element in an amount of about 0.2 wt % or more and less than about 1.0 wt %; and a resin layer that covers the ferrite particle.
    Type: Application
    Filed: September 9, 2009
    Publication date: July 22, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yosuke TSURUMI, Rieko KATAOKA
  • Patent number: 7683867
    Abstract: A system, method, and computer-usable medium are presented for controlling viewing angle characteristics by performing a color palette gradation control of a liquid crystal display, such that adjustment effects on a viewing angle range are improved.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: March 23, 2010
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Kohji Inoue, Manabu Kodate, Keita Ishii, Rieko Kataoka
  • Patent number: 7502952
    Abstract: A method and system are provided for thermal management of a CPU. Both hardware and software data are used to periodically calculate a power consumption index. An internal database is provided to convert power consumption data to rotational speed of an associated cooling fan for the CPU. Based upon a change in the calculated power consumption, the rotational speed of the fan may be adjusted to accommodate the change in power consumption. Accordingly, the method and system monitors and adjusts the rotational speed of the cooling fan based upon available hardware and software data.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: March 10, 2009
    Assignee: International Business Machines Corporation
    Inventors: Yuji Chotoku, Rieko Kataoka, Takayuki Katoh
  • Publication number: 20080102396
    Abstract: A toner for developing an electrostatic charge image, includes: a binder resin formed by reacting a polymerizable aromatic monomer having an ethylenically unsaturated double bond conjugated to an aromatic ring thereof, a nitrogen-containing polymerizable aliphatic monomer having an ethylenically unsaturated double bond and a sulfur-containing aliphatic compound to each other; and a colorant, wherein a ratio (MN/MS) of an amount of nitrogen (MN) to an amount of sulfur (MS) is in a range of from 1.
    Type: Application
    Filed: April 26, 2007
    Publication date: May 1, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Norihito Fukushima, Rieko Kataoka, Sakon Takahashi, Toshiyuki Yano
  • Patent number: 7343505
    Abstract: A method and system are provided for thermal management of a CPU. Both hardware and software data are used to periodically calculate a power consumption index. An internal database is provided to convert power consumption data to rotational speed of an associated cooling fan for the CPU. Based upon a change in the calculated power consumption, the rotational speed of the fan may be adjusted to accommodate the change in power consumption. Accordingly, the method and system monitors and adjusts the rotational speed of the cooling fan based upon available hardware and software data.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: March 11, 2008
    Assignee: International Business Machines Corporation
    Inventors: Yuji Chotoku, Rieko Kataoka, Takayuki Katoh
  • Publication number: 20070252544
    Abstract: A method and system are provided for thermal management of a CPU. Both hardware and software data are used to periodically calculate a power consumption index. An internal database is provided to convert power consumption data to rotational speed of an associated cooling fan for the CPU. Based upon a change in the calculated power consumption, the rotational speed of the fan may be adjusted to accommodate the change in power consumption. Accordingly, the method and system monitors and adjusts the rotational speed of the cooling fan based upon available hardware and software data.
    Type: Application
    Filed: July 11, 2007
    Publication date: November 1, 2007
    Applicant: International Business Machines Corporation
    Inventors: Yuji Chotoku, Rieko Kataoka, Takayuki Katoh
  • Publication number: 20060164329
    Abstract: A system, method, and computer-usable medium are presented for controlling viewing angle characteristics by performing a color palette gradation control of a liquid crystal display, such that adjustment effects on a viewing angle range are improved.
    Type: Application
    Filed: January 20, 2006
    Publication date: July 27, 2006
    Inventors: Kohji Inoue, Manabu Kodate, Keita Ishii, Rieko Kataoka
  • Patent number: 7057610
    Abstract: A display unit 200 equipped with a panel 230 in which pixels are arranged in a matrix, includes: a mode setting section 240 for setting the display unit 200 to one of a plurality of display modes; a voltage supply section 250 for changing a drive voltage which serves as a reference voltage for voltage supplied to the panel 230, according to the display mode set by the mode setting section 240; a gate driver 260 for supplying a selection signal to a plurality of the pixels arranged in a row direction in the panel 230; and a source driver 270 for supplying each of the plurality of pixels selected based on the selection signal with a pixel drive voltage generated according to luminance data which specifies luminance of the given pixel and to the drive voltage.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: June 6, 2006
    Assignee: International Business Machines Corporation
    Inventors: Rieko Kataoka, Masaki Kobayashi, Hideki Ogawa, Tetsuya Sakaedani
  • Publication number: 20060095796
    Abstract: A method and system are provided for thermal management of a CPU. Both hardware and software data are used to periodically calculate a power consumption index. An internal database is provided to convert power consumption data to rotational speed of an associated cooling fan for the CPU. Based upon a change in the calculated power consumption, the rotational speed of the fan may be adjusted to accommodate the change in power consumption. Accordingly, the method and system monitors and adjusts the rotational speed of the cooling fan based upon available hardware and software data.
    Type: Application
    Filed: October 28, 2004
    Publication date: May 4, 2006
    Inventors: Yuji Chotoku, Rieko Kataoka, Takayuki Katoh
  • Patent number: 6900820
    Abstract: The refresh rate of an LCD panel is changed as the brightness of the LCD panel changes. When the brightness of the LCD panel is decreased, the refresh rate is also decreased. In addition, whether the power source of the apparatus is AC or DC is determined based on whether an AC adapter is attached or not. When the DC power source is used, the brightness and refresh rate of the LCD panel is lowered with respect to when the AC power source is used.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: May 31, 2005
    Assignee: International Business Machines Corporation
    Inventors: Rieko Kataoka, Hideki Ogawa, Yasumasa Takeda, Masaki Kobayashi