Patents by Inventor Masahiro Iwasaki

Masahiro Iwasaki 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: 7887747
    Abstract: The present invention provides a WC—Co system (the WC—Co system in the present invention means that it comprises not only hard grains composed mainly of WC and iron group metal powder containing Co, but also at least one kind selected from carbide, nitride, carbonitride and boride of elements in Groups IVa, Va and VIa of the Periodic Table, excluding WC, as hard grains) cemented carbide having high strength and high toughness which is excellent in wear resistance, toughness, chipping resistance and thermal crack resistance.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: February 15, 2011
    Assignee: Sanalloy Industry Co., Ltd.
    Inventors: Masahiro Iwasaki, Hidefumi Yanagita, Masaaki Ikebe
  • Publication number: 20110013840
    Abstract: To provide an image processing apparatus which robustly performs segmentation on an image including an object such as a moving person with its deformation. The image processing apparatus includes: an image inputting unit (101) which receives temporally successive images; a motion analyzing unit (102) which calculates motions of blocks using at least two temporally different images and calculates, based on the motions of the blocks, temporal motion trajectories of the blocks in the temporally successive images; a distance calculating unit (103) which calculates a distance which indicates a similarity of the motions of the blocks, using a temporal motion trajectory of a block i and a temporal motion trajectory of a block other than the block i calculated by the motion analyzing unit; and a nonlinear space processing unit (104) which projects the distance calculated by the distance calculating unit into a nonlinear space and performs the segmentation on a result of the projection in the nonlinear space.
    Type: Application
    Filed: March 14, 2008
    Publication date: January 20, 2011
    Inventors: Masahiro Iwasaki, Arasanathan Thayananthan, Roberto Cipolla
  • Publication number: 20110002509
    Abstract: A moving object detection method with which a region of a moving object is accurately extracted without being affected by a change in shape or size or occlusion of the moving object and in which a distance indicating a similarity between trajectories of an image in each of the blocks included in video is calculated (S203) and a group of similar trajectories is identified as one region based on the distance (S209).
    Type: Application
    Filed: December 18, 2009
    Publication date: January 6, 2011
    Inventors: Kunio Nobori, Masahiro Iwasaki, Ayako Komoto
  • Publication number: 20100330473
    Abstract: The invention provides an electrophotographic photoreceptor having a surface protection layer that satisfies the following requirements: (1) including a crosslinked substance of at least one selected from a guanamine compound or a melamine compound, and at least one charge transporting material having at least one substituent selected from —OH, —OCH3, —NH2, —SH or —COOH; (2) including the at least one of a guanamine compound or a melamine compound in an amount of from about 0.1 to about 5% by weight; and (3) having a universal hardness of from about 180 to about 220 N/mm2 and a creep ratio of from about 5% to about 8%, the universal hardness and the creep ratio being obtained by performing a hardness test by pushing a Vickers quadrangular pyramid diamond indenter against the surface protection layer at a maximum load of 20 mN, in an environment of 25° C. and a relative humidity of 50%.
    Type: Application
    Filed: November 30, 2009
    Publication date: December 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Daisuke HARUYAMA, Masahiro IWASAKI
  • Publication number: 20100330472
    Abstract: There is provided an electrophotographic photoreceptor including a conductive substrate; an intermediate layer; a photosensitive layer; and a surface layer, in this order, the surface layer including two or more charge transporting materials each including a reactive substituent and respectively having mutually different ionization potentials, in an amount of 90% by weight or more relative to the total solid content of the surface layer, and the content ratio X of each of the two or more charge transporting materials satisfying the following Formula (1).
    Type: Application
    Filed: November 23, 2009
    Publication date: December 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hirofumi NAKAMURA, Keiko MATSUKI, Shingo HIRAHARA, Takanori SUGA, Daisuke HARUYAMA, Hirokazu SAKASHITA, Masahiro IWASAKI, Takayuki YAMASHITA, Mitsuhide NAKAMURA
  • Patent number: 7842444
    Abstract: The invention provides an electrophotographic photoreceptor comprising a conductive substrate having a photosensitive layer and a protective layer thereon, the protective layer comprising a crosslinked film having a phenolic structure, in which the relationship between a pH of the exfoliated protective layer extracted with distilled water (pHOCL) and a pH of said distilled water (pHw) satisfies the following formula (A):pHOCL?pHW?0.5.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: November 30, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsumi Nukada, Masahiro Iwasaki, Wataru Yamada
  • Publication number: 20100247148
    Abstract: There is provided an image forming apparatus including electrophotographic photoreceptor, a charging unit, an electrostatic latent image forming unit, a developing unit, and a residual toner removing unit, the surface protective layer of the electrophotographic photoreceptor having a surface free energy of about 10 mN/m to about 30 mN/m, the toner in the developing unit includes silica, and the residual toner removing unit including a blade member including a base layer and an edge layer having a type A durometer hardness of from about HsA 75 to about HsA 90 at 23° C., the hardness of the edge layer baing higher than the hardness of the base layer.
    Type: Application
    Filed: September 9, 2009
    Publication date: September 30, 2010
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Daisuke HARUYAMA, Masahiro IWASAKI, Takayuki YAMASHITA
  • Publication number: 20100248101
    Abstract: An electrophotographic photoreceptor comprising: a conductive substrate; a photosensitive layer formed on the conductive substrate; and an outermost surface layer that is a layer made of a cured material of a composition including at least one compound represented by the following formula (I) and at least one compound having charge transportability and an azo group: wherein in formula (I), F represents an n-valent organic group having a hole transporting property, R represents a hydrogen atom or an alkyl group, L represents a divalent organic group, n represents an integer of 1 or more, and j represents 0 or 1.
    Type: Application
    Filed: August 31, 2009
    Publication date: September 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Wataru YAMADA, Katsumi NUKADA, Masahiro IWASAKI, Akira HIRANO, Takatsugu DOI
  • Publication number: 20100128926
    Abstract: An image processing device which simultaneously secures and extracts a background image, at least two object images, a shape of each object image and motion of each object image, from among plural images, the image processing device including an image input unit (101) which accepts input of plural images; a hidden parameter estimation unit (102) which estimates a hidden parameter based on the plural images and a constraint enforcement parameter, which indicates a condition of at least one of the hidden parameters, using an iterative learning method; a constraint enforcement parameter learning unit (103) which learns a constraint enforcement parameter related to the hidden parameter using an estimation result from the hidden parameter estimation unit as a training signal; and a complementary learning unit (104) which causes the estimation of the hidden parameter and the learning of the constraint enforcement parameter, which utilize the result from the learning of the hidden parameter, to be iterated.
    Type: Application
    Filed: December 1, 2006
    Publication date: May 27, 2010
    Inventors: Masahiro Iwasaki, Arasanathan Thayananthan, Roberto Cipolla
  • Patent number: 7702019
    Abstract: A moving object detection device including a spatiotemporal data generation unit 120 generating time series data, which arranges data indicating a moving object along a temporal axis, based on an output from a camera 100, an inter-leg information unit 140 extracting based on the generated time series data, inter-leg information, which is information regarding a temporal change in an inter-leg area arising from movement of a moving object that has two or more legs, and a periodicity analysis unit 150 analyzing a periodicity within the extracted inter-leg information. Further, the moving object detection devices includes a moving object detection unit 160 generating, from the analyzed periodicity, movement information that includes the presence or lack thereof of a moving object.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: April 20, 2010
    Assignee: Panasonic Corporation
    Inventors: Masahiro Iwasaki, Toshiki Kindo, Taro Imagawa
  • Patent number: 7660443
    Abstract: Image data of an image including an eye is input (S1), and band limitation is performed (S2). Then, a predetermined feature such as moment is extracted from the band-limited image data (S3), and recognition as to whether the eye projected in the image is a counterfeit eye or a living eye is performed based on the extracted feature (S4).
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: February 9, 2010
    Assignee: Panasonic Corporation
    Inventors: Takeo Azuma, Kenji Kondo, Masahiro Iwasaki, Masahiro Wakamori
  • Patent number: 7618490
    Abstract: To provide a spraying material having an excellent quick-setting property and excellent adherability, a small alkali amount and excellent initial strength development, and a spraying method using it. The spraying material comprises a liquid quick-setting admixture containing an aluminum source, a sulfur source and a fluorine source, one or more quick-setting aids selected from the group consisting of calcium aluminate, calcium sulfoaluminate, calcium aluminosilicate, an alkali metal-containing substance, calcium hydroxide and aluminum hydroxide, and a cement concrete, and the method is to spray this spraying material.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: November 17, 2009
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuhiro Nakashima, Shunichi Mishima, Masahiro Iwasaki, Isao Terashima, Atsumu Ishida, Takamitsu Murokawa, Tomohito Kobayashi
  • Patent number: 7613325
    Abstract: The present invention provides a human detection device which detects a human contained in a moving picture, and includes the following: a spatiotemporal volume generation unit which generates a three-dimensional spatiotemporal image in which frame images that make up the moving picture in which a human has been filmed are arranged along a temporal axis; a spatiotemporal fragment extraction unit which extracts a real image spatiotemporal fragment, which is an image appearing in a cut plane or cut fragment when the three-dimensional spatiotemporal image is cut, from the generated three-dimensional spatiotemporal image; a human body region movement model spatiotemporal fragment output unit which generates and outputs, based on a human movement model which defines a characteristic of the movement of a human, a human body region movement spatiotemporal fragment, which is a spatiotemporal fragment obtained from a movement by the human movement model; a spatiotemporal fragment verification unit which verifies betwe
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: November 3, 2009
    Assignee: Panasonic Corporation
    Inventors: Masahiro Iwasaki, Taro Imagawa, Kenji Nagao, Etsuko Nagao, legal representative
  • Publication number: 20090238602
    Abstract: An electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate, an outermost layer of the photosensitive layer containing a crosslinked product formed from at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH and at least one selected from a guanamine compound or a melamine compound, the content of the at least one charge transporting material being at least about 90% by weight, and the content of the at least one selected from the guanamine compound or the melamine compound being from about 0.1% by weight to about 5% by weight.
    Type: Application
    Filed: October 8, 2008
    Publication date: September 24, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro IWASAKI, Katsumi NUKADA, Wataru YAMADA, Kenta IDE, Hirofumi NAKAMURA, Mitsuhide NAKAMURA, Koji BANDO, Kaori IEMULA, Kazuya HONGO, Yasuhiro NIIDA
  • Patent number: 7585603
    Abstract: A curable resin composition for use as a constituting material of an electrophotographic photoreceptor, comprises: a phenolic resin; a charge transportable material having a reactive functional group; and at least one of an organic sulfonic acid and its derivative.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: September 8, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Wataru Yamada, Katsumi Nukada, Masahiro Iwasaki, Kenji Yao
  • Patent number: 7473503
    Abstract: An electrophotographic photoreceptor comprising: a conductive support; and a photo-sensitive layer on the conductive support, wherein the photo-sensitive layer comprises a functional layer comprising a cured product of a curable resin composition, the curable resin composition comprising an alcohol-soluble, curable resin and a polyether-modified silicone oil.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: January 6, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Wataru Yamada, Katsumi Nukada, Masahiro Iwasaki, Kenji Yao, Kazuhiro Koseki
  • Publication number: 20090004583
    Abstract: According to the invention, there is provided an electrophotographic photoreceptor comprising a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate, an outermost layer of the photosensitive layer containing a crosslinked product composed of a guanamine compound and at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH.
    Type: Application
    Filed: March 17, 2008
    Publication date: January 1, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi NUKADA, Wataru YAMADA, Masahiro IWASAKI, Kazuhiro KOSEKI
  • Patent number: 7431996
    Abstract: The present invention relates to a polyester resin including at least one repeating unit represented by the following formula (1): wherein Ar1, Ar2 and Ar3 independently represent a substituted or unsubstituted arylene group, a substituted or unsubstituted bivalent heterocyclic group, or a combination thereof; T1 and T2 each represent a linear or branched bivalent hydrocarbon group having 1 to 10 carbon atoms; and n represents 0 or 1.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: October 7, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Iwasaki, Katsumi Nukada
  • Publication number: 20080220356
    Abstract: An electrophotographic photoreceptor including a photosensitive layer provided including a first functional layer including a compound represented by the following Formula (I). In Formula (I), F represents an n-valent organic group having hole transportation ability; R1, R2, and R3 each independently represents a hydrogen atom, a halogen atom, or a monovalent organic group; L represents a divalent organic group; n represents an integer of 1 to 4; and j represents an integer of 0 or 1.
    Type: Application
    Filed: September 28, 2007
    Publication date: September 11, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Wataru Yamada, Katsumi Nukada, Masahiro Iwasaki, Kazuhiro Koseki
  • Patent number: 7397931
    Abstract: A human identification apparatus, which can judge for identification of human images even in temporally-distant frames or frames shot with different cameras, judges whether or not persons represented by human images respectively included in different image sequences are the same person, and includes: a walking posture detecting unit which detects first and second walking sequences, each sequence being an image sequence indicating a walking state of respective first and second persons respectively included in the different image sequences; and a walking state estimating unit which estimates a transition state of a walking posture in the periodic walking movement of the first person at a time or in a position different from a time or a position of the walking sequence of the first person; and a judging unit which verifies whether or not the estimated transition state of the walking posture of the first person matches the transition state of the walking posture of the second person, and judges that the first per
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: July 8, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Taro Imagawa, Masahiro Iwasaki