Patents by Inventor Hideaki Matsuoka

Hideaki Matsuoka 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: 20150241800
    Abstract: A conductive layer of an electrophotographic photosensitive member contains a first metal oxide particle, a second metal oxide particle, and a binder material. The first metal oxide particle is a zinc oxide particle or tin oxide particle coated with tin oxide doped with phosphorus, tungsten, fluorine, niobium, or tantalum, and the second metal oxide particle is a tin oxide particle doped with an element selected from the group consisting of phosphorus, tungsten, fluorine, niobium, and tantalum, the element being the same as the element with which the tin oxide of the first metal oxide particle is doped. The conductive layer satisfies formulae (1) and (2).
    Type: Application
    Filed: February 23, 2015
    Publication date: August 27, 2015
    Inventors: Hiroyuki Tomono, Haruyuki Tsuji, Atsushi Fujii, Kazuhisa Shida, Nobuhiro Nakamura, Hideaki Matsuoka, Takashi Anezaki
  • Publication number: 20150212437
    Abstract: An electrophotographic photosensitive member in which a leak hardly occurs, and a process cartridge and electrophotographic apparatus having the same are provided. The conductive layer in the electrophotographic photosensitive member includes a binder material, a first metal oxide particle, and a second metal oxide particle. The first metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus, tungsten, niobium, tantalum, or fluorine, and the second metal oxide particle is an uncoated titanium oxide particle. The contents of the first and second metal oxide particles in the conductive layer is 20 to 50 vol. % and 1.0 to 15 vol. %, respectively based on the total volume of the conductive layer. The content of the second metal oxide particle in the conductive layer is 5.0 to 30% by volume based on the content of the first metal oxide particle in the conductive layer.
    Type: Application
    Filed: August 29, 2013
    Publication date: July 30, 2015
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuhisa Shida, Atsushi Fujii, Haruyuki Tsuji, Nobuhiro Nakamura, Hideaki Matsuoka, Hiroyuki Tomono
  • Publication number: 20150205218
    Abstract: Provided are an electrophotographic photosensitive member in which a residual potential hardly increases at the time of image formation, a pattern memory hardly occurs, and the crack of a conductive layer hardly occurs, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. To this end, the conductive layer of the electrophotographic photosensitive member contains a titanium oxide particle coated with tin oxide doped with phosphorus, a tin oxide particle doped with phosphorus, and a binding material, and when a total volume of the conductive layer is represented by VT, a total volume of the titanium oxide particle coated with tin oxide doped with phosphorus in the conductive layer is represented by V1P, and a total volume of the tin oxide particle doped with phosphorus in the conductive layer is represented by V2P, the VT, the V1P, and the V2P satisfy the following expressions: 2?{(V2P/VT)/(V1P/VT)}×100?25 and 15?{(V1P/VT)+(V2P/VT)}×100?45.
    Type: Application
    Filed: August 29, 2013
    Publication date: July 23, 2015
    Inventors: Haruyuki Tsuji, Atsushi Fujii, Kazuhisa Shida, Nobuhiro Nakamura, Hideaki Matsuoka, Hiroyuki Tomono
  • Patent number: 9046797
    Abstract: To provide a process for producing an electrophotographic photosensitive member that can not easily cause any fog due to an increase in dark attenuation, a conductive layer is formed with use of a coating liquid for conductive layer prepared with use of a solvent, a binder material and metal oxide particles. The metal oxide particles (P) and binder material (B) in the coating liquid for conductive layer are in a mass ratio (P/B) of from 1.5/1.0 to 3.5/1.0. The metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus or tungsten. Where powder resistivity of the metal oxide particle is represented by x (?·cm) and powder resistivity of the titanium oxide particle as a core particle constituting the metal oxide particle is represented by y (?·cm), the y and the x satisfy the following relations (i) and (ii): 5.0×107?y?5.0×109??(i) 1.0×102?y/x?1.0×106??(ii).
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: June 2, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Fujii, Hideaki Matsuoka, Haruyuki Tsuji, Nobuhiro Nakamura, Kazuhisa Shida
  • Patent number: 9040214
    Abstract: Provided are an electrophotographic photosensitive member in which leakage doesn't easily occur, a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member, and a method of manufacturing the electrophotographic photosensitive member. The electrophotographic photosensitive member includes a conductive layer including titanium oxide particle coated with tin oxide doped with a hetero element. When an absolute value of a maximum current amount flowing through the conductive layer in a case of performing a test of applying ?1.0 kV including DC voltage to the conductive layer is defined as Ia, and an absolute value of a current amount flowing through the conductive layer in a case where a decrease ratio of a current amount per minute reaches 1% or less for the first time is defined as Ib, the relations of Ia?6000 and 10?Ib are satisfied. A volume resistivity of the conductive layer before the test is 1.0×108 ?·cm to 5.0×1012 ?·cm.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: May 26, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Fujii, Hideaki Matsuoka, Haruyuki Tsuji, Kazuhisa Shida, Nobuhiro Nakamura
  • Publication number: 20150086921
    Abstract: A method for producing an electrophotographic photosensitive member in which leakage hardly occurs is provided. For this, in the method for producing an electrophotographic photosensitive member according to the present invention, a coating liquid for a conductive layer is prepared using a solvent, a binder material, and a metallic oxide particle having a water content of not less than 1.0% by mass and not more than 2.0% by mass; using the coating liquid for a conductive layer, a conductive layer having a volume resistivity of not less than 1.0×108 ?·cm and not more than 5.0×1012 ?·cm is formed; the mass ratio (P/B) of the metallic oxide particle (P) to the binder material (B) in the coating liquid for a conductive layer is not less than 1.5/1.0 and not more than 3.5/1.
    Type: Application
    Filed: June 17, 2013
    Publication date: March 26, 2015
    Inventors: Atsushi Fujii, Hideaki Matsuoka, Haruyuki Tsuji, Nobuhiro Nakamura, Kazuhisa Shida
  • Patent number: 8986656
    Abstract: An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: March 24, 2015
    Assignees: Hirosaki University, National University Corporation Tokyo Unversity of Agriculture and Technology
    Inventors: Katsuya Yamada, Hideaki Matsuoka, Tadashi Teshima, Toshihiro Yamamoto
  • Patent number: 8778580
    Abstract: An electrophotographic photosensitive member having a specific conductive layer and promising less variation in light-area potential and residual potential in reproducing images repeatedly, and a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member are provided. Where a test in which a voltage of ?1.0 kV having only a DC voltage component is continuously applied to the conductive layer for 1 hour is conducted, the conductive layer has volume resistivity satisfying the following mathematical expressions (1) and (2), as values before and after the test: ?2.00?(log|?2|?log|?1|)?2.00??(1), and 1.0×108??1?2.0×1013??(2), where, in the expressions (1) and (2), ?1 is volume resistivity (?·cm) of the conductive layer as measured before the test and ?2 is volume resistivity (?·cm) of the conductive layer as measured after the test.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruyuki Tsuji, Atsushi Fujii, Hideaki Matsuoka
  • Publication number: 20140093277
    Abstract: An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member. The electrophotographic photosensitive member has a conductive layer which contains titanium oxide particles coated with tin oxide doped with phosphorus or tungsten.
    Type: Application
    Filed: December 3, 2013
    Publication date: April 3, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Fujii, Haruyuki Tsuji, Hideaki Matsuoka, Kazuhisa Shida, Nobuhiro Nakamura
  • Publication number: 20130323632
    Abstract: Provided are an electrophotographic photosensitive member in which leakage doesn't easily occur, a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member, and a method of manufacturing the electrophotographic photosensitive member. The electrophotographic photosensitive member includes a conductive layer including titanium oxide particle coated with tin oxide doped with a hetero element. When an absolute value of a maximum current amount flowing through the conductive layer in a case of performing a test of applying ?1.0 kV including DC voltage to the conductive layer is defined as Ia, and an absolute value of a current amount flowing through the conductive layer in a case where a decrease ratio of a current amount per minute reaches 1% or less for the first time is defined as Ib, the relations of Ia?6000 and 10?Ib are satisfied. A volume resistivity of the conductive layer before the test is 1.0×108 ?·cm to 5.0×1012 ?·cm.
    Type: Application
    Filed: March 1, 2012
    Publication date: December 5, 2013
    Inventors: Atsushi Fujii, Hideaki Matsuoka, Haruyuki Tsuji, Kazuhisa Shida, Nobuhiro Nakamura
  • Publication number: 20130316283
    Abstract: To provide a process for producing an electrophotographic photosensitive member that can not easily cause any fog due to an increase in dark attenuation, a conductive layer is formed with use of a coating liquid for conductive layer prepared with use of a solvent, a binder material and metal oxide particles. The metal oxide particles (P) and binder material (B) in the coating liquid for conductive layer are in a mass ratio (P/B) of from 1.5/1.0 to 3.5/1.0. The metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus or tungsten. Where powder resistivity of the metal oxide particle is represented by x (?·cm) and powder resistivity of the titanium oxide particle as a core particle constituting the metal oxide particle is represented by y (?·cm), the y and the x satisfy the following relations (i) and (ii): 5.0×107?y?5.0×109??(i) 1.0×102?y/x?1.0×106??(ii).
    Type: Application
    Filed: March 1, 2012
    Publication date: November 28, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Fujii, Hideaki Matsuoka, Haruyuki Tsuji, Nobuhiro Nakamura, Kazuhisa Shida
  • Patent number: 8455170
    Abstract: An electrophotographic photosensitive member is provided in which black spots on an output image are hardly caused by local charge injection from a support to a photosensitive layer. For this purpose, a conductive layer is formed using a coating liquid for a conductive layer prepared using a solvent, a binder material and a metal oxide particle that satisfies the following relation (i): 45?A×?×D?65 (i) wherein A denotes the surface area of the metal oxide particle per unit mass [m2/g], D denotes the number average particle diameter of the metal oxide particle [?m], and ? denotes the density of the metal oxide particle [g/cm3]. The metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: June 4, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuhiro Nakamura, Hideaki Matsuoka, Atsushi Fujii, Haruyuki Tsuji, Kazuhisa Shida
  • Patent number: 8303736
    Abstract: A casted aluminum alloy obtained by casting a molten metal of an aluminum alloy, an aluminum alloy material obtained by at least heating the casted aluminum alloy, and methods for producing them. In the production of the casted aluminum alloy, a molten metal is obtained by melting an aluminum alloy containing 0.8 to 5 mass % of Fe, 0.15 to 1 mass % of Ti, Zr or the like as third component elements in an specific amount, and a residual part containing Al and inevitable impurities at a certain temperature (melting step). Subsequently, the molten metal is cast into a plate-like shape by a casting mold while cooling the molten metal to a temperature that is lower by at least 10° C. than a solidus temperature of the aluminum alloy at a cooling rate of 150° C./sec. or more and less than 10000° C./sec. (casting step).
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: November 6, 2012
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventor: Hideaki Matsuoka
  • Publication number: 20120225381
    Abstract: An electrophotographic photosensitive member is provided in which black spots on an output image are hardly caused by local charge injection from a support to a photosensitive layer. For this purpose, a conductive layer is formed using a coating liquid for a conductive layer prepared using a solvent, a binder material and a metal oxide particle that satisfies the following relation (i): 45?A×?×D?65 (i) wherein A denotes the surface area of the metal oxide particle per unit mass [m2/g], D denotes the number average particle diameter of the metal oxide particle [?m], and ? denotes the density of the metal oxide particle [g/cm3]. The metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 6, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Nobuhiro Nakamura, Hideaki Matsuoka, Atsushi Fujii, Haruyuki Tsuji, Kazuhisa Shida
  • Publication number: 20120121291
    Abstract: An electrophotographic photosensitive member having a specific conductive layer and promising less variation in light-area potential and residual potential in reproducing images repeatedly, and a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member are provided. Where a test in which a voltage of ?1.0 kV having only a DC voltage component is continuously applied to the conductive layer for 1 hour is conducted, the conductive layer has volume resistivity satisfying the following mathematical expressions (1) and (2), as values before and after the test: ?2.00?(log|?2|?log|?1|)?2.00??(1), and 1.0×108??1?2.0×1013??(2), where, in the expressions (1) and (2), ?1 is volume resistivity (?·cm) of the conductive layer as measured before the test and ?2 is volume resistivity (?·cm) of the conductive layer as measured after the test.
    Type: Application
    Filed: September 3, 2010
    Publication date: May 17, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Haruyuki Tsuji, Atsushi Fujii, Hideaki Matsuoka
  • Publication number: 20120114375
    Abstract: An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member. The electrophotographic photosensitive member has a conductive layer which contains titanium oxide particles coated with tin oxide doped with phosphorus or tungsten.
    Type: Application
    Filed: September 3, 2010
    Publication date: May 10, 2012
    Applicant: Canon Kabushiki Kaisha
    Inventors: Atsushi Fujii, Haruyuki Tsuji, Hideaki Matsuoka, Kazuhisa Shida, Nobuhiro Nakamura
  • Publication number: 20110189708
    Abstract: An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.
    Type: Application
    Filed: August 7, 2009
    Publication date: August 4, 2011
    Applicants: HIROSAKI UNIVERSITY, NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
    Inventors: Katsuya Yamada, Hideaki Matsuoka, Tadashi Teshima, Toshihiro Yamamoto
  • Publication number: 20110116966
    Abstract: An aluminum alloy is composed of 15% or more and 7.5% or less by mass of silicon, 0.45% or more and 0.8% or less by mass of magnesium, 0.05% or more and 0.35% or less by mass of chromium, and aluminum, assuming that the total amount of the alloy is 100% by mass.
    Type: Application
    Filed: July 6, 2009
    Publication date: May 19, 2011
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Kawahara, Hideaki Matsuoka, Hiroaki Iwahori, Taiki Kanou, Chikatoshi Maeda, Tokujiro Konishi
  • Patent number: 7875447
    Abstract: To provide an inexpensive cell incubator for a single cell operation supporting robot having the markers (first and second feature points) required to transform the position of a cell detected on a table coordinate system into a position on the intrinsic coordinate system of the cell incubator. First and second feature points are formed on a film-like feature point setup chip which is then stuck to the cell incubator body such as a conventional dish, thus constituting a cell incubator. Since manufacture of a new die for forming the first and second feature points directly on the cell incubator body is not required, an inexpensive cell incubator for a single cell operation supporting robot can be provided.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: January 25, 2011
    Assignees: Chuo Precision Industrial Co., Ltd., Tokyo University of Agriculture and Technology National University Corporation
    Inventors: Yohei Yamada, Mikako Saito, Hideaki Matsuoka
  • Publication number: 20100098580
    Abstract: A casted aluminum alloy obtained by casting a molten metal of an aluminum alloy, an aluminum alloy material obtained by at least heating the casted aluminum alloy, and methods for producing them. In the production of the casted aluminum alloy, a molten metal is obtained by melting an aluminum alloy containing 0.8 to 5 mass % of Fe, 0.15 to 1 mass % of Ti, Zr or the like as third component elements in an specific amount, and a residual part containing Al and inevitable impurities at a certain temperature (melting step). Subsequently, the molten metal is cast into a plate-like shape by a casting mold while cooling the molten metal to a temperature that is lower by at least 10° C. than a solidus temperature of the aluminum alloy at a cooling rate of 150° C./sec. or more and less than 10000° C./sec. (casting step).
    Type: Application
    Filed: January 22, 2008
    Publication date: April 22, 2010
    Applicant: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventor: Hideaki Matsuoka