Patents by Inventor Hirokazu Koyama

Hirokazu Koyama 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: 7123280
    Abstract: A thermal transfer image receiving sheet comprising a support having an image receiving layer on one surface of the support and a backing layer on the other surface of the support, wherein, (a) a first electrical resistance of the thermal transfer image receiving sheet is in a range of 1×108–1×1012 ohms per square before the transferable protection layer is transferred; and (b) a second electrical resistance of the thermal transfer image receiving sheet is in a range of 1×108–1×1012 ohms per square after the transferable protection layer is transferred and after the backing layer is removed, the first and second electrical resistances being measured by a salt bridge method.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: October 17, 2006
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Hirokazu Koyama, Hiroshi Watanabe, Hiroaki Yamagishi, Hiroki Nakane
  • Publication number: 20050069656
    Abstract: A thermal transfer recording material containing: (i) a thermal transfer sheet comprising a support having thereon an image transfer layer containing a dye and a first binder resin; and (ii) an image receiving sheet comprising a support having thereon an image receiving layer containing a second binder resin, wherein the dye in the image transfer layer has a melting point (MP1) of not more than 130° C.
    Type: Application
    Filed: September 15, 2004
    Publication date: March 31, 2005
    Applicant: Konica Minolta Photo imaging, Inc.
    Inventors: Hiroki Nakane, Hiroshi Watanabe, Hiroaki Yamagishi, Hirokazu Koyama
  • Publication number: 20050068406
    Abstract: A thermal transfer image receiving sheet comprising a support having an image receiving layer on one surface of the support and a backing layer on the other surface of the support, wherein, (a) a first electrical resistance of the thermal transfer image receiving sheet is in a range of 1×108-1×1012 ohms per square before the transferable protection layer is transferred; and (b) a second electrical resistance of the thermal transfer image receiving sheet is in a range of 1×108-1×1012 ohms per square after the transferable protection layer is transferred and after the backing layer is removed, the first and second electrical resistances being measured by a salt bridge method.
    Type: Application
    Filed: September 17, 2004
    Publication date: March 31, 2005
    Applicant: Konica Minolta Photo Imaging, Inc.
    Inventors: Hirokazu Koyama, Hiroshi Watanabe, Hiroaki Yamagishi, Hiroki Nakane
  • Publication number: 20050068407
    Abstract: Disclosed is a protective layer transfer sheet for forming an image by the method which comprising the steps of overlaying a thermal transfer image receiving sheet and a thermal transfer recording ink sheet, forming an image on the thermal diffusible dye receiving layer by heating, and forming a protective layer on the image by transferring the thermal transferable protective layer unit by heating, in which the thermal transferable protective layer unit is constituted by plural transferable resin layers and at least one of the resin layers contains a metal ion-containing compound and a layer other than the resin layer containing the metal ion-containing compound contains a UV absorbent, and a barrier layer is arranged between the metal ion-containing layer and the UV absorbent containing layer.
    Type: Application
    Filed: September 20, 2004
    Publication date: March 31, 2005
    Applicant: Konica Minolta Photo Imaging, Inc.
    Inventors: Hiroshi Watanabe, Hiroaki Yamagishi, Hirokazu Koyama, Hiroki Nakane
  • Publication number: 20050067090
    Abstract: An image forming method containing the steps of (a) forming an image on a thermal transfer sheet of a thermal transfer recording material, and (b) transferring the image onto an image receiving sheet of the thermal transfer recording material, wherein the thermal transfer sheet including a substrate having thereon a yellow ink layer containing a thermally transferable yellow dye, a magenta ink layer containing a thermally transferable magenta dye, and a cyan ink layer containing a thermally transferable cyan dye, the image receiving sheet including a substrate having thereon a thermally transferable dye receiving layer; at least one of the thermally transferable dyes is reactive with a dye fixing agent, and satisfies Formula of (Aa/Am)×100?75; and a printing rate of each of the yellow ink layer, the magenta ink layer and the cyan ink layer is not more than 2.5 msec./line.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 31, 2005
    Applicant: Konica Minolta Photo Imaging, Inc.
    Inventors: Yoriko Nakayama, Hiroshi Watanabe, Hiroaki Yamagishi, Hirokazu Koyama, Kaori Fukumuro, Hiroki Nakane
  • Patent number: 6511738
    Abstract: A support for rolled light-sensitive photographic materials is disclosed. The support is composed of at least three polyester films laminated, in which outer layers are comprised of copolyester; at least one interlayer is comprised of the mixture of said copolyester and homopolyester; the total film thickness is between 105 and 130 &mgr;pm; the total thickness of interlayers is between 45 and 85 &mgr;m; and the ratio of said copolyester in the mixture layer of said copolyester and said homopolyester is between 10 and 40 percent by weight.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: January 28, 2003
    Assignee: Konica Corporation
    Inventors: Hirokazu Koyama, Toshiaki Shibue
  • Publication number: 20010033921
    Abstract: A support for rolled light-sensitive photographic materials is disclosed. The support is composed of at least three polyester films laminated, in which outer layers are comprised of copolyester; at least one interlayer is comprised of the mixture of said copolyester and homopolyester; the total film thickness is between 105 and 130 &mgr;pm; the total thickness of interlayers is between 45 and 85 &mgr;m; and the ratio of said copolyester in the mixture layer of said copolyester and said homopolyester is between 10 and 40 percent by weight.
    Type: Application
    Filed: January 26, 2001
    Publication date: October 25, 2001
    Inventors: Hirokazu Koyama, Toshiaki Shibue
  • Patent number: 5955251
    Abstract: A method for producing an information recording medium is disclosed. The method comprising the steps of (1) applying a surface treatment on a surface of a film support so that the atomic percentage of oxygen at said surface is increased by 1.0 atomic-% to 10 atomic-% compared to the atomic percentage of oxygen at said surface before treatment, (2) providing a subbing layer comprising a water-soluble or water-dispersible polymer having a 2-oxazoline group represented by Formula A on said treated surface of the film support so that the subbing layer is directly adjoined to said surface, and (3) providing an information recording layer on said subbing layer, ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, a phenyl group.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: September 21, 1999
    Assignee: Konica Corporation
    Inventors: Hirokazu Koyama, Makoto Honda, Toshiaki Shibue
  • Patent number: 5372923
    Abstract: A light-sensitive silver halide photographic material is disclosed which comprises a support and provided thereon, a light sensitive silver halide emulsion layer, and a conductive layer comprising a conductive material in an amount of 0.01 to 30% by volume and a binder, the conductive material being powder comprising an oxide of a metal selected from Zn, Ti, Al, In, Si, Mg, Ba, Mo, W and V, said powder having a specific volume resistance of not more than 10.sup.7 .OMEGA..multidot.cm and having a particle structure with a linkage of 3 to 1000 primary particles of the oxide.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: December 13, 1994
    Assignee: Konica Corporation
    Inventors: Yasuo Kurachi, Yoichi Saito, Kiyokazu Morita, Hirokazu Koyama, Yoshihiro Wada
  • Patent number: 5231193
    Abstract: A process for producing ellagic acid comprising reacting a tannin having gallic acid residues attached as constituents with an oxidizing agent at pH 7 or higher.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: July 27, 1993
    Assignee: Kikkoman Corporation
    Inventors: Kiyoshi Mizusawa, Yasuhiko Imai, Katsumi Yuasa, Hirokazu Koyama, Nobuyuki Yamaji, Shigehiro Kataoka, Tetsuya Oguma