Patents by Inventor Kunihiro Koshizuka

Kunihiro Koshizuka 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: 5698363
    Abstract: An image forming method is disclosed.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: December 16, 1997
    Assignee: Konica Corporation
    Inventors: Ai Katsuda, Hiroshi Watanabe, Tomonori Kawamura, Toshihisa Takeyama, Kunihiro Koshizuka
  • Patent number: 5691103
    Abstract: An image forming material is disclosed which comprises a support and provided thereon, an image forming layer containing a colorant, the image forming layer being hardened, wherein an image is formed by imagewise exposing the image forming layer to a high density energy light to reduce an adhesive force between the image forming layer and the support and by removing the exposed portions of the image forming layer of the image forming material.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: November 25, 1997
    Assignee: Konica Corporation
    Inventors: Toshihisa Takeyama, Ai Katsuda, Kunihiro Koshizuka, Tomonori Kawamura, Masataka Takimoto, Yoshitaka Goto
  • Patent number: 5534372
    Abstract: An IC card in which an IC chip is incorporated between a first and second base boards, comprises an image receiving layer on which an ink image is transferred by a thermal transfer method and a cushion layer provided between the IC chip and the image receiving layer so that the cushion layer smooths irregularity caused by the IC chip and improves a flatness of the image receiving layer.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: July 9, 1996
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Shigehiro Kitamura, Masataka Takimoto, Tomonori Kawamura
  • Patent number: 5489567
    Abstract: A method for treating a thermally transferred image is disclosed. The method comprising the steps of (1) thermally transferring an image from the ink layer of a ink sheet which comprises a support and a ink layer comprising a sublimation dye provided on the support, to the surface of an image receiving layer of a image receiving element which comprises a support and a image receiving layer provided on the support, by means of imagewise heating by a first thermal head, and (2) heating the surface of the image receiving layer having the transferred image by a second thermal head through a plastic film contacted to the surface of the image receiving layer.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: February 6, 1996
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Shigehiro Kitamura, Masataka Takimoto, Tomonori Kawamura
  • Patent number: 5407893
    Abstract: An ID card material comprises a thermal transfer image-receiving layer, and provided thereon, a substrate layer and a writing layer in this order, the substrate layer comprising a biaxially oriented polyester film layer having a thickness of 300 to 500 .mu.m and a resin layer having a thickness of 30 to 500 .mu.m selected from the group consisting of a polyolefin layer, a polyvinyl chloride type resin film layer and an ABS resin film layer.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: April 18, 1995
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Shigehiro Kitamura, Masataka Takimoto, Tomonori Kawamura
  • Patent number: 5378675
    Abstract: A thermal transfer recording image receiving sheet which are free from printing unevenness, high in sensitivity and transfer density, and immune from curling is disclosed. The sheet is laminated on a support with a polypropylene layer of 5 to 100 .mu.m in thickness, containing fine white hollow particles.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: January 3, 1995
    Assignee: Konica Corporation
    Inventors: Toshihisa Takeyama, Shigehiro Kitamura, Kunihiro Koshizuka
  • Patent number: 5358582
    Abstract: The object of the present invention is to provide a method of simply producing an ID card which can provide the Id card with character information shared by the same kind of ID cards issued in large numbers, and an ID card which offers improved protection of the gradation image formed on the image-receiving layer and which is difficult to forge or alter.The ID card is characterized in that a transparent resin sheet having character information shared by the same kind of ID cards is provided on the surface of an image-receiving layer which has a gradation image and character-information-bearing image and which has been formed on the support.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: October 25, 1994
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Shigehiro Kitamura, Atsushi Nakajima, Tomonori Kawamura
  • Patent number: 5330961
    Abstract: Disclosed are an image receiving sheet for thermal transfer recording comprising: a support and an image receiving layer which contains a resin having dyeing affinity for a thermally diffusible dye provided thereon, wherein the support comprises a substrate and a laminated resin sheet which contains porous resin films each having a density in the range of 0.5 to 1.2 g/cm.sup.3 provided on both surfaces of the substrate, and a process for preparing the image receiving sheet for thermal transfer recording, comprising: a step of pasting a substrate and a resin film with an adhesive to produce a laminated resin sheet used as the support.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: July 19, 1994
    Assignee: Konica Corporation
    Inventors: Toshihisa Takeyama, Shigehiro Kitamura, Kunihiro Koshizuka
  • Patent number: 5292572
    Abstract: A heat-transfer recording medium is disclosed, which produces no lowering in transfer density even when the medium is used under such higher-temperature conditions as in a facsimile equipment and is capable of providing an easily readable transferred image having a low surface gloss, as well as having an excellent keep-secrecy and producing few voids. The recording medium comprises a support; a heat-transfer layer, provided on the support, comprising a thermo-fusible substance and a colorant; and a non-transfer layer which is interposed between the support and the transfer layer and comprises a colorant, a thermoplastic polymer selected from the following Group A and a thermoplastic polymer selected from the following Group B:Group A: an .alpha.-olefin polymer, an .alpha.-olefin-maleic anhydride copolymer, an .alpha.-olefin-alkyl acrylate and methacrylate copolymer, an .alpha.-olefin-vinyl acetate copolymer, an .alpha.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: March 8, 1994
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Toshiaki Tezuka, Shigeru Mano, Toshihisa Takeyama, Takao Abe
  • Patent number: 5280005
    Abstract: Disclosed is an image receiving sheet for thermal transfer recording comprising: a support and an image receiving layer thereon, wherein the image receiving layer comprises an outermost layer being farthest from the support and a layer other than the outermost layer, and a glass transition temperature of a first binder used in the outermost layer is higher than that of a second binder used in the layer adjacent to the outermost layer.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: January 18, 1994
    Assignee: Konica Corporation
    Inventors: Atsushi Nakajima, Shigehiro Kitamura, Tomonori Kawamura, Kunihiro Koshizuka
  • Patent number: 5276003
    Abstract: An image receiving sheet used for heat transfer recording is disclosed. The image receiving layer of the sheet contains a vinyl chloride-vinylether copolymer. It is suitable to form images of high densities at a low thermal energy, free from fusion with a heat-transfer-recording ink sheet at the time of heat transfer, and excellent in image preservability.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: January 4, 1994
    Assignee: Konica Corporation
    Inventor: Kunihiro Koshizuka
  • Patent number: 5270283
    Abstract: An image receiving sheet comprising an image receiving layer. The image receiving layer contains a copolymer layer containing a vinyl chloride-type resin which has an epoxy group in the molecule. It is used to record images by heat-transferring a thermal diffusible dye contained in an ink layer of an ink sheet for heat transfer recording.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: December 14, 1993
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Atsushi Nakajima
  • Patent number: 5270073
    Abstract: A heat sensitive recording material is disclosed. The material comprises an image receiving layer and a colorant layer, wherein the image receiving layer is adhered to the colorant layer so firmly that the image receiving layer can be separated from the colorant layer with a peeling force of 1 to 1000 g/mm at an angle of 180.degree. after forming an image on the image receiving layer.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: December 14, 1993
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Takao Abe
  • Patent number: 5254525
    Abstract: Thermal transfer image recording material and a method of its production for an ID card which bears a distinct gradation image with high durabilty without using a laminate film, is disclosed. It is coated with a UV-setting resin and has a UV absorbing layer underneath for protecting the image from discoloring by UV irradiation.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: October 19, 1993
    Assignee: Konica Corporation
    Inventors: Atsushi Nakajima, Tomonori Kawamura, Shigehiro Kitamura, Kunihiro Koshizuka
  • Patent number: 5250133
    Abstract: An image forming method using a thermal transfer processes and an apparatus used in the method are disclosed. The images were formed on the image receiving layer of a image recording body and includes a gradation information-containing image formed by means of a thermal sublimation transfer method and a character information-containing image formed by means of a thermal fusion transfer method. A trans parent protective layer is transferred from a protective forming thermal transfer sheet to the surface of image receiving layer so as to cover the whole area of the image receiving layer by a hot stamping means. The hot stamping means has a heating roll which has a contacting length longer than the width of said image receiving layer and a peripheral length longer than the length of said image receiving layer.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: October 5, 1993
    Assignee: Konica Corporation
    Inventors: Tomonori Kawamura, Kunihiro Koshizuka
  • Patent number: 5246910
    Abstract: A thermal transfer recording image-receiving sheet is disclosed. The sheet comprises a support and provided thereon, an image receiving layer comprising a metallic ion-containing compound. A concentration of the metallic ion-containing compound at a portion closer to the support is higher than that of the metallic ion-containing compound at a portion farther to the support.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: September 21, 1993
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Shigehiro Kitamura, Atsushi Nakajima, Tomonori Kawamura, Toshihisa Takeyama
  • Patent number: 5219610
    Abstract: A thermal transfer recording medium having at least one peel layer on a support and at least one heat-softening layer on the peel layer, and containing a coloring material in at least one layer of the peel layer and heat-softening layer, wherein;(i) the peel layer adjacent to the support contains a polyoxyethylene compound;(ii) at least one heat-softening layer contains an ionomer;(iii) at least one layer of the heat-softening layer has a breaking extension in the range of 70 to 200 % at 27.degree. C.; or(iv) at least one substantially colorless protective layer constituting an outermost layer is laminated on the heat-softening layer.A method for preparing a thermal transfer recording medium, which comprises providing at least one peel layer on a support by hot-melt coating, and forming at least one heat-softening layer on the peel layer by water base coating.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: June 15, 1993
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Takao Abe
  • Patent number: 5215810
    Abstract: A thermal transfer recording medium suitable for multiple setting is disclosed. The recording medium comprises a support and a plurality of heat softening colorant layer provided on said support, and a porous or island-like resin layer having a softning point higher than that of said heat softning colorant layers or having no softning point interposed between said heat softning colorant layers.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: June 1, 1993
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Shigeru Mano, Tatsuichi Maehashi, Takao Abe
  • Patent number: 5154980
    Abstract: There is disclosed the heat transfer recording medium having an excellent resolution and capable of forming printed images having improved resistance to abrasion and solvent. The recording medium is characterized by the peeling layer containing amide wax.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: October 13, 1992
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Takao Abe
  • Patent number: 5137786
    Abstract: A heat sensitive transfer recording medium is disclosed, which is excellent in the heat-transferability onto a large variety of paper surface and is suitably usable for repetitive printings. The recording medium comprises a subbed support and a heat fusible coloring material layer which contains at least one compound having a plurality of polar groups and/or polar bonds selected from the group consisting of a hydroxyl group, an amino group, an imino group, a carboxyl group, an ester bond, an ether bond, an urethane bond and an amino bond.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: August 11, 1992
    Assignee: Konica Corporation
    Inventors: Kunihiro Koshizuka, Yoshihiro Inaba, Takao Abe, Tatsuichi Maehashi