Patents by Inventor Yasuhiro Yoshioka

Yasuhiro Yoshioka 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: 20060115777
    Abstract: A photothermographic material including, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and a non-photosensitive layer, wherein the photothermographic material contains a metal phthalocyanine dye represented by formula (I): wherein, M represents a metal atom; R1, R2, R3, R4, R5, R6, R7, and R8 each independently represent a hydrogen atom or a substituent, with at least one of them being a substituent; X1, X2, X3, and X4 each independently represent a hydrogen atom or a substituent; and at least one of R1, R2, R3, R4, R5, R6, R7, R8, X1, X2, X3, and X4 is an oil-soluble group. The invention provides a photothermographic material which exhibits preferable image tone and excellent image storability.
    Type: Application
    Filed: October 19, 2005
    Publication date: June 1, 2006
    Inventor: Yasuhiro Yoshioka
  • Patent number: 7052828
    Abstract: The present invention provides a photothermographic material including at least a photosensitive silver halide, a non-photosensitive silver-supplying compound, a reducing agent and a binder on at least one surface of a support. The photothermographic material further includes at least one kind of halogen releasing compound having a water-solubilizing group and at least one kind of halogen releasing compound having no water-solubilizing group, and a gradation of a characteristic curve is 2.5 to 4.0. The photothermographic material of the invention is excellent in storability, and particularly excellent in storability of high quality images used for image recording for medical diagnosis.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: May 30, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • Patent number: 7049056
    Abstract: A method for wrapping a heat-developable photosensitive material, which comprises bending a wrapping material so that the wrapping material can bring into direct contact with at least a part of a heat-developable photosensitive material comprising a photosensitive silver halide, a reducing agent, a binder and a non-photosensitive organic silver salt having a silver behenate content of not lower than 53 mol % provided on one side of a support, wherein the wrapping material is a paper.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: May 23, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayoshi Oyamada, Yasuhiro Yoshioka, Eiichi Okutsu
  • Publication number: 20060078835
    Abstract: A photothermographic material including, on at least one surface of a support, at least a photosensitive silver halide containing a silver iodide at 40 mol % or more, a non-photosensitive organic silver salt, and a reducing agent, wherein the photothermographic material contains two or more kinds of the reducing agent at the mixing ratio to satisfy at least one of a), b), c) and d): a) a difference between a sensitivity or b) a difference between a maximum density is 0.10 or less, when developed at 120° C. for 10 sec and a sensitivity when developed at 120° C. for 14 sec; c) a difference between a sensitivity or d) a difference between a maximum density is 0.10 or less, when developed at 117° C. for 12 sec and a sensitivity when developed at 123° C. for 12 sec. An image forming method using the photothermographic material is also provided.
    Type: Application
    Filed: November 9, 2005
    Publication date: April 13, 2006
    Inventors: Yasuhiro Yoshioka, Katsutoshi Yamane, Yasuhiko Goto
  • Patent number: 7008760
    Abstract: Disclosed is a silver halide color photographic light-sensitive material having at least three silver halide emulsion layers different in color sensitivity from each other on a reflective support, wherein said reflective support is one selected from the group consisting of the following (a), (b) and (c): (a) the reflective support is a water-resistant resin-coated support, and at least one layer of the water-resistant resin layers between the support and the silver halide emulsion layers is a biaxially oriented polyolefin layer having micropores, (b) the reflective support is a water-resistant resin-coated support, and at least one layer of the water-resistant resin layers between the support and the silver halide emulsion layers is a biaxially oriented polyolefin layer having micropores, and between the polyolefin layer and the silver halide emulsion layers, a polyolefin layer having no micropore is provided, and (c) the reflective support is one prepared by coating onto at least the side of the emulsion-coa
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: March 7, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Yoneyama, Yasuaki Deguchi, Yasuhiro Yoshioka, Hidekazu Sakai, Katsuyuki Takada, Yoshiro Ochiai, Shin Soejima, Kentaro Okazaki
  • Publication number: 20050233271
    Abstract: A photothermographic material comprising an image forming layer, on at least one side of a support, comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein 50% by weight or more of the binder is formed by a polymer latex, an amount of coated silver is from 0.9 g/m2 to 1.2 g/m2, and wherein a mean grain size (D0.5) of developed silver in an image portion having a density of 0.5 and a mean grain size (D3.0) of developed silver in an image portion having a density of 3.0 satisfy a relationship represented by the following equation (1): D0.5/D3.0?1.1??Equation (1) A photothermographic material having a high image quality with high image density and excellent color tone of developed silver images is provided.
    Type: Application
    Filed: April 13, 2005
    Publication date: October 20, 2005
    Inventors: Minoru Sakai, Yasuhiro Yoshioka, Kimitoshi Nagao
  • Publication number: 20050221237
    Abstract: An image forming method comprising by imagewise exposing a photothermographic material comprising at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, on at least one surface of a support, and thermally developing the photothermographic material at a line speed of 20 mm/sec or higher using an image forming apparatus, wherein the reducing agent is a bisphenol compound which has at a meso-position a substituent with ring structure or a substituent having an unsaturated bond.
    Type: Application
    Filed: May 20, 2005
    Publication date: October 6, 2005
    Inventors: Minoru Sakai, Fumito Nariyuki, Yasuhiro Yoshioka
  • Publication number: 20050214700
    Abstract: The present invention provides a silver halide photosensitive material and a photothermographic material having, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for the organic silver salt, wherein the silver halide photosensitive material and the photothermographic material contain a phthalocyanine compound represented by the following formula (PC-1): wherein, M represents a hydrogen atom or a metal atom; R1, R4, R5, R8, R9, R12, R13, and R16 each independently represent a hydrogen atom or a substituent; at least one of R1, R4, R5, R8, R9, R12, R13, and R16 represents an electron-attracting group; and R2, R3, R6, R7, R10, R11, R14, and R15 each independently represent a hydrogen atom or a substituent.
    Type: Application
    Filed: March 7, 2005
    Publication date: September 29, 2005
    Inventors: Seiichi Yamamoto, Masahiko Taniguchi, Yasuhiro Yoshioka, Takanori Hioki, Hideo Hanawa
  • Publication number: 20050208441
    Abstract: The invention provides a photothermographic material having, at least on a surface of a substrate, an image forming layer including a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and adapted to be exposed with an X-ray intensifying screen, the material including a non-photosensitive intermediate layer A on a surface of the substrate at the side having the image forming layer and between an outermost layer farthest from the substrate and the image forming layer, wherein a binder of the non-photosensitive intermediate layer A includes a hydrophobic polymer by 50 mass % or more, or a photothermographic material in which the photosensitive silver halide has a silver iodide content of 40 to 100 mol. %, and an image forming method for such photothermographic materials.
    Type: Application
    Filed: March 16, 2005
    Publication date: September 22, 2005
    Inventors: Takayoshi Oyamada, Keiichi Suzuki, Yasuhiro Yoshioka, Kazutaka Takahashi
  • Publication number: 20050202357
    Abstract: A photothermographic material comprising a support, and an image-forming layer and a non-photosensitive layer provided on a surface of the support, wherein the image-forming layer and the non-photosensitive layer are adjacent to each other; the image-forming layer includes a photosensitive silver halide, a first non-photosensitive organic silver salt, a first reducing agent, a polyhalogen compound and a binder; and the non-photosensitive layer includes a second non-photosensitive organic silver salt.
    Type: Application
    Filed: March 9, 2005
    Publication date: September 15, 2005
    Inventor: Yasuhiro Yoshioka
  • Publication number: 20050202355
    Abstract: A photothermographic material, which includes: a support; and image forming layers containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, a polyhalogen compound, and a binder, on the support, wherein the number of the image forming layers provided is at least 2, at least one layer of the image forming layers contains a reducing agent represented by the following formula (I), and at least one layer of the other image forming layers contains a reducing agent represented by the following formula (II):
    Type: Application
    Filed: March 4, 2005
    Publication date: September 15, 2005
    Inventor: Yasuhiro Yoshioka
  • Publication number: 20050106515
    Abstract: The present invention provides a photothermographic material including at least a photosensitive silver halide, a non-photosensitive silver-supplying compound, a reducing agent and a binder on at least one surface of a support. The photothermographic material further includes at least one kind of halogen releasing compound having a water-solubilizing group and at least one kind of halogen releasing compound having no water-solubilizing group, and a gradation of a characteristic curve is 2.5 to 4.0. The photothermographic material of the invention is excellent in storability, and particularly excellent in storability of high quality images used for image recording for medical diagnosis.
    Type: Application
    Filed: September 14, 2004
    Publication date: May 19, 2005
    Inventor: Yasuhiro Yoshioka
  • Patent number: 6821721
    Abstract: A photothermographic material comprising: a substrate; and a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, in a same region defined by the substrate, wherein the photothermographic material further comprises a fluorine compound which comprises at least one fluoroalkyl group having 2 or more of carbon atoms and not more than 13 of fluorine atoms and at least one of anionic and nonionic hydrophilic groups, and 40 to 98% by mol of the non-photosensitive organic silver salts are silver behenate.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: November 23, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • Publication number: 20040214114
    Abstract: A photothermographic material including, on at least one surface of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein the photosensitive silver halide has a silver iodide content of 40 mol % or more, and the photothermographic material satisfies at least one of a), b), c) and d):
    Type: Application
    Filed: April 16, 2004
    Publication date: October 28, 2004
    Inventor: Yasuhiro Yoshioka
  • Publication number: 20040202970
    Abstract: An image forming method, including a step of using an image forming apparatus to form an image on a photothermographic material comprising, on at least one surface of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, wherein the method satisfies one of the following conditions:
    Type: Application
    Filed: March 30, 2004
    Publication date: October 14, 2004
    Inventors: Minoru Sakai, Fumito Nariyuki, Yasuhiro Yoshioka
  • Publication number: 20040185389
    Abstract: A photothermographic material of the present invention contains a slipping agent. One slipping agent is a liquid at a ordinary temperature, and an volatile rate of the slipping agent at 120° C. for one hour is 0.5% by mass or less as measured by a thermo-balance. The other slipping agent is that a permeating rate to the transportation rollers, when the transportation rollers are immersed in the slipping agent at 120° C. for 2 hours, is 6% by mass or less.
    Type: Application
    Filed: January 12, 2004
    Publication date: September 23, 2004
    Inventors: Yasuhiro Yoshioka, Yoshihisa Tsukada, Takayoshi Oyamada, Minoru Sakai
  • Patent number: 6783927
    Abstract: A photothermographic material is described which comprises a support having provided on one surface thereof at least one kind of a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent for silver ions, and a binder, wherein the photothermographic material comprises the surface active agent represented by the following formula (F): wherein Rf represents a perfluoroalkyl group, Rc represents an alkylene group, Z represents a group having an anionic group, a cationic group, a betaine-series group, or a nonionic polar group necessary for imparting a surface activity, n represents an integer of 0 or 1, and m represents an integer of 1, 2 or 3. The photothermographic material can remarkably prevent attaching of dust, etc., which become the case of forming white spots after heat development.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: August 31, 2004
    Assignee: Fuji Photo Film, Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • Patent number: 6780578
    Abstract: The thermally developable photosensitive material of the present invention has a support and including on at least one surface of the support a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for thermal development, a binder and a compound represented by the following general formula (1): wherein R1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group; X represents a chalcogen atom; and Y represents an amino group, an N-alkylamino group, an N,N-dialkylamino group, an anilino group, a hydroxyl group, an alkoxy group, an aryloxy group, an acylamino group or a sulfonamide group, and wherein when Y represents an alkoxy group, an alkylamino group, a dialkylamino group, an acylamino group or a sulfonamide group, Y and R1 may be bonded to each other to form a 5- to 7-membered ring.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: August 24, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuhiro Yoshioka, Keiichi Suzuki
  • Publication number: 20040152023
    Abstract: The present invention provides an image forming method using an image recording apparatus that includes a laser irradiating means for laser scanning of a photothermographic material that has a support and includes on at least one surface thereof a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and a conveying means for guiding the photothermographic material in a sub-scanning direction to a thermal development unit, wherein the reducing agent is a specific bisphenol compound. The invention also provides another image forming method including carrying out thermal development, with an interval time equal to or less than 12 seconds, of the photothermographic material.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 5, 2004
    Inventors: Eiichi Okutsu, Katsutoshi Yamane, Yasuhiro Yoshioka
  • Patent number: 6762016
    Abstract: A photothermographic material is described, which comprises a support having provided on at least one side thereof a photosensitive silver halide, a photo-insensitive organic silver salt, a reducing agent for silver ion and a binder, wherein at least one layer constituting the photothermographic material comprises an oxazoline compound, by which sufficiently high image density is developed within practically feasible reaction time and temperature, and sufficiently suppressed background coloration is exhibited when stored for a prolonged period after development processing.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: July 13, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Itsuo Fujiwara, Yoshihisa Tsukada, Yasuhiro Yoshioka, Hajime Nakagawa