Patents by Inventor Masanaga Imamura

Masanaga Imamura 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: 6348519
    Abstract: Emulsion ink, by which clear images are produced, having excellent drying and fixing properties and preservation stability and does not bleed, strike through or leak. The emulsion ink contains an aqueous emulsified ultraviolet cure compound.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: February 19, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Kouichi Ohshima, Masanaga Imamura, Keishi Taniguchi, Eiichi Kawamura, Hiroshi Adachi
  • Patent number: 6063835
    Abstract: Emulsion ink, by which clear images are produced, having excellent drying and fixing properties and preservation stability and does not bleed, strike through or leak. The emulsion ink contains an aqueous emulsified ultraviolet cure compound.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: May 16, 2000
    Assignee: Ricoh Company, Ltd.
    Inventors: Kouichi Ohshima, Masanaga Imamura, Keishi Taniguchi, Eiichi Kawamura, Hiroshi Adachi
  • Patent number: 5990042
    Abstract: A noncontact-reading type IC card image receiving material useful for sublimation thermal transfer recording is provided which is made by forming a resin cover film overlying a substrate including an IC chip and an antenna and in which an image is recorded on a surface of the receiving material or a receiving layer optionally formed on the receiving material by imagewise heating a sublimation thermal transfer recording material having an ink layer which contacts the receiving material or the receiving layer, wherein the resin cover film is formed by an injection and compression molding method. The receiving material is preferably subjected to a heat treatment after an image is formed thereon.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: November 23, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidehiro Mochizuki, Masanaga Imamura
  • Patent number: 5750299
    Abstract: A method of forming a colored image on a heat resistant solid surface by use of a toner-image-layer-bearing image formation medium; a method of forming the toner-image-layer bearing image formation medium; inorganic toners for the formation of inorganic toner image for proposed.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: May 12, 1998
    Assignee: Ricoh Company, Ltd.
    Inventors: Kouchi Ohshima, Shinichi Kuramoto, Hiromitsu Kawase, Yoichiro Watanabe, Takamichi Enomoto, Masanaga Imamura, Katsumi Kuboshima, Junji Toda
  • Patent number: 4880768
    Abstract: A sublimation type thermosensitive image transfer recording medium which can be used in repetition, comprising a support; a dye supplying layer formed on the support, comprising a sublimable dye and at least one binder agent in which the sublimable dye is dissolved or dispersed; and an image transfer facilitating layer formed on the dye supplying layer, comprising the sublimable dye and at least one organic binder agent in which the sublimable dye is dissolved or dispersed, the dye supplying layer and the image transfer facilitating layer being structured in such a manner that when the dye supplying layer and the image transfer facilitating layer are separately formed on a substrate, and the layers are separately superimposed on the same receiving sheet, with application of an equal quantity of thermal energy thereto, the amount (weight/unit time.unit area) of the sublimable dye transferred from the dye supplying layer to the receiving sheet is greater than the amount (weight/unit time.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: November 14, 1989
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidehiro Mochizuki, Masanaga Imamura, Akira Suzuki, Masaru Shimada, Hiroyuki Uemura
  • Patent number: 4680592
    Abstract: An image formation method wherein a thin film of a dyestuff liable to sublime or gasify is formed on a gas permeable film, and a heating element adjacent the back of the gas permeable film is heated in response to an image signal to generate from the dyestuff thin film a dyestuff gas flow which is representative of an image and which permeates through the gas permeable film so that the dyestuff deposits on acceptor paper adjacent the gas permeable film to form the image on the back of the acceptor paper.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: July 14, 1987
    Assignee: Ricoh Co., Ltd.
    Inventors: Masanaga Imamura, Isao Mizuno
  • Patent number: 4164307
    Abstract: A cap with a supply stopper for use with ordinary containers comprising a detachable double cap, that is, an outer cap and an inner cap which is used as a supply cap having a supply opening and a supply stopper. By an engagement mechanism of the upper cap and the inner cap, when the upper cap is fastened, the supply stopper is firmly pressed against the supply opening so that the leakage of contents in the container during storage or transportation is completely prevented.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: August 14, 1979
    Assignee: Ricoh Company Limited
    Inventors: Masanaga Imamura, Hisashi Sakai, Hiroaki Sugiyama, Seiji Ozawa
  • Patent number: 4019646
    Abstract: A cap for receptacles provided with an inside stopper, wherein the inside of the side-wall of the cap is threaded so as to fit on the threaded side-wall of the opening of the receptacle and the inside stopper is provided with a side-wall whose outside diameter is equal to or slightly greater than the inside diameter of the opening of the receptacle and is provided with a flange on the upper end of said side-wall and having an outside diameter smaller than the inside diameter of the cap. The inside stopper is securely attached to the cap so as to be free from slipping out therefrom.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: April 26, 1977
    Assignee: Ricoh Co., Ltd.
    Inventor: Masanaga Imamura