Patents by Inventor Akihiro Imai

Akihiro Imai 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: 5583227
    Abstract: This invention relates to a novel compound which is useful as a drug in preventing and/or treating peptic ulcer-related diseases, to a production process thereof and to a pharmaceutical composition containing the same.Particularly, it provides a compound which has a specified substituted alkynylpyrazine nucleus or a specified substituted alkynylquinoxaline nucleus, represented by the following formula (I) ##STR1## wherein A is represented by the following formula (II) or (III) ##STR2## and R.sup.1 is represented by the following formula (IV), ##STR3## and the salts thereof, a production process thereof and a pharmaceutical composition containing the same.The inventive compound is useful as a drug in preventing and/or treating peptic ulcer-related diseases.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 10, 1996
    Assignees: Mochida Pharmaceutical Co. Ltd., Hodogaya Chemical Co. Ltd.
    Inventors: Takeshi Niho, Ichiro Yamamoto, Hidenori Mochizuki, Ikuo Kimura, Akihiro Imai, Tetsuyuki Nakase
  • Patent number: 5571766
    Abstract: The present invention enables to print the image of high picture quality on an ordinary paper or other arbitrary substrate for sublimation thermal transfer printing by the thermal transfer printing method, wherein using the combination of a transfer printing member with a coloring material layer on the substrate A, intermediate medium with dye-receiving layer on the substrate B and an image receiving member.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 5, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Hiroyuki Matsuo, Yasuo Fukui, Nobuyoshi Taguchi
  • Patent number: 5545605
    Abstract: A thermal transfer printing method, in a combination of a transfer medium including a support on which at least a dyeing layer and a dye anti-diffusion layer (and a protecting layer) are provided separately from color layers, an intermediate medium, and an image-receiving medium, comprising steps of: transferring at least the dye anti-diffusion layer and the dyeing layer (and the protecting layer) onto the intermediate medium, thereby forming a sequential laminate on the intermediate medium; printing a thermal transfer image in the dyeing layer of the laminate formed on the intermediate medium; and transferring the laminate carrying the thermal transfer image thereon from the intermediate medium onto the image-receiving medium (and fixing it simultaneously, or after transferring), thereby finally forming a print image on the image-receiving medium.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: August 13, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Yasuo Fukui, Hiroyuki Matsuo
  • Patent number: 5538933
    Abstract: A thermal transfer printing method which employs a dyeing layer transfer member having at least a dyeing layer on a base material, an ink transfer member having at least an ink layer containing a subliming dye on a base material, recording intermediate member having at least a base material, and an image-receptor. The thermal transfer printing method includes the steps of thermally transferring the dyeing layer of the dyeing layer transfer member onto the recording intermediate member, thermally transferring and recording ink of the ink transfer member onto the transferred dyeing layer according to image signals, and further thermally transferring the recorded dyeing layer onto the image-receptor. The disclosure also relates to printing media employed for effecting the method. The method may be rearranged to preliminarily form the dyeing layer on the recording intermediate member, and in this case, the dyeing layer transfer member and the process for its thermal transfer may be dispensed with.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: July 23, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuyoshi Taguchi, Akihiro Imai, Yasuo Fukui
  • Patent number: 5447902
    Abstract: The present invention provides a thermal printing method using a sublimable dye, which is capable of faithfully printing on any kind of substrates, including plain paper without the tack sheets which make the process complicated. The method of the present invention comprises forming an image into a printing layer by heating a color layer with a printing head and then transferring the printing layer onto an image receive sheet by pressure or heat; wherein the color layer and printing layer are respectively formed on one substrate in a certain interval of distance without putting one upon another, the surface of the color layer is placed on the surface of the printing layer and heat is applied to the color layer from the substrate side with a printing head to form an image into a printing layer.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: September 5, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Yasuo Fukui, Nobuyoshi Taguchi
  • Patent number: 5448282
    Abstract: A process for thermal transfer printing method including the steps of forming a thermal transfer image in a dyeing layer of an intermediate sheet using a coloring layer of a transfer sheet and transferring the dyeing layer carrying the formed image from the intermediate sheet to an image receptor with a medium for applying heat and/or pressure, in which the medium is also used for fixing the transferred dyeing layer on the image receptor, and an thermal transfer printing apparatus having means for feeding an elongate intermediate sheet having a dyeing layer, means for cutting the elongate intermediate sheet, printing means for forming a thermal transfer image in the dyeing layer of intermediate sheet, and means for transferring the dyeing layer carrying the formed thermal transfer image to an image receptor, by which the printed image with low gloss is formed on the image receptor at a high printing speed.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: September 5, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Hiroyuki Matsuo, Yasuo Fukui, Nobuyoshi Taguchi
  • Patent number: 5444037
    Abstract: The present invention enables to print the image of high picture quality on an ordinary paper or other arbitrary substrate for sublimation thermal transfer printing by the thermal transfer printing method, wherein using the combination of a transfer printing member with a coloring material layer on the substrate A, intermediate medium with dye-receiving layer on the substrate B and an image receiving member.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: August 22, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Hiroyuki Matsuo, Yasuo Fukui, Nobuyoshi Taguchi
  • Patent number: 5438348
    Abstract: The present invention is directed to a thermal transfer printing process comprising:heating a thermal ink film with a printing head to print dye transferring images onto an intermediate sheet which comprises a substrate and a printing layer thereon,heaping an image receive sheet on said printing layer, andtransferring said printing layer onto the image receive sheet by pressure or heat;an improvement residing in that said printing layer is formed from polyvinyl acetal.The present invention also provides an intermediate sheet for the above thermal transfer printing process comprising a substrate and a printing layer on said substrate wherein said printing layer is formed from polyvinyl acetal.
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: August 1, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Yasuo Fukui, Nobuyoshi Taguchi
  • Patent number: 5398051
    Abstract: A thermal transfer recording method for recording, in which an intermediate transfer member having a recording layer formed on a polymeric layer is used in such a way that the intermediate transfer member and an ink sheet is placed one over the other, dye being thermally transferred from an ink material layer of the ink sheet to the recording layer. The intermediate transfer member and an image receiving medium are placed one over the other, and they are subjected to pressure and heat so that the recording layer is transferred from the intermediate transfer member onto the image receiving medium.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: March 14, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasuo Fukui, Soichirou Mima, Hiroyuki Matsuo, Akihiro Imai, Nobuyoshi Taguchi
  • Patent number: 5342818
    Abstract: The present invention provides a thermal transfer printing method, an intermediate medium and a transfer medium therefor, which make it possible to obtain printed image having deep color and high light resistance without back diffusion of dye.The method of the present invention comprises:transferring each color image by a printing head from a transfer medium A onto an intermediate medium wherein said transfer medium A has at least one color ink block consisting of color ink layers each of which contains different color ink, said intermediate medium has image receiving layers, whereby each image receiving layer on the intermediate medium contains one color image, andtransferring each color image receiving layer onto an imaging sheet from the intermediate medium, so that a same image receive portion of the imaging sheet contains the image receiving layers corresponding to one color ink block.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: August 30, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Hiroyuki Matsuo, Yasuo Fukui, Soichiro Mima, Nobuyoshi Taguchi
  • Patent number: 5334574
    Abstract: Thermal dye transfer printing systems which are adapted For multiple-use printing modes wherein one dye transfer sheet is repeatedly used and which comprise a dye transfer sheet having, on a substrate, a dye transfer layer containing a sublimable dye and a binder resin and a dye receiving sheet having a dye receiving layer which has a diffusion rate of the dye smaller than the dye transfer layer. This is effective in suppressing a lowering of printing density owing to the increase in number of printing cycles using one dye transfer sheet. Alternatively, the dye transfer sheet is constituted such that the dye transfer layer is made of a plurality of sub-layers in which the concentration of the dye decreases from the sub-layer formed directly on the substrate toward the surface side of the dye transfer layer. The dye is invariably supplied from the higher concentration sub-layers to ensure full color printing with a remarkably increasing number of multiple-use printing cycles.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: August 2, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiromu Matsuda, Tetsuji Kawakami, Keiichi Yubakami, Akihiro Imai, Nobuyoshi Taguchi
  • Patent number: 5332459
    Abstract: The present invention is directed to a thermal transfer printing process comprising:heating a thermal ink film with a printing head to print dye transferring images onto an intermediate sheet which comprises a substrate and a printing layer thereon,heaping an image receive sheet on said printing layer, andtransferring said printing layer onto an image receive sheet by pressure or heat;The improvement residing in that said printing layer is formed from polyvinyl acetal.The present invention also provides an intermediate sheet for the above thermal transfer printing process comprising a substrate and a printing layer on said substrate wherein said printing layer is formed from polyvinyl acetal.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: July 26, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Yasuo Fukui, Nobuyoshi Taguchi
  • Patent number: 5292714
    Abstract: A dye transfer thermal printing sheet which can give a color record image excellent in color reproducibility and weather resistance with middle shade including black and sufficiently saturated density. This printing sheet includes a substrate on which are arranged, in face-sequence, coloring material layers which are different in hue and contain at least one dye represented by the formula (I), at least one dye represented by the formula (II) and at least one dye represented by the formula (III).
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: March 8, 1994
    Assignees: Matsushita Electric Industrial Co., Ltd., Mitsubishi Kasei Corporation
    Inventors: Tetsuji Kawakami, Akihiro Imai, Nobuyoshi Taguchi, Yukichi Murata, Takao Hirota
  • Patent number: 5284814
    Abstract: A thermal transfer printing method which employs a dyeing layer transfer member having at least a dyeing layer on a base material, an ink transfer member having at least an ink layer containing a subliming dye on a base material, recording intermediate member having at least a base material, and an image-receptor. The thermal transfer printing method includes the steps of thermally transferring the dyeing layer of the dyeing layer transfer member onto the recording intermediate member, thermally transferring and recording ink of the ink transfer member onto the transferred dyeing layer according to image signals, and further thermally transferring the recorded dyeing layer onto the image-receptor. The disclosure also relates to printing media employed for effecting the method. It may be so arranged to preliminarily form the dyeing layer on the recording intermediate member, and in this case, the dyeing layer transfer member and the process for its thermal transfer may be dispensed with.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: February 8, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuyoshi Taguchi, Akihiro Imai, Yasuo Fukui
  • Patent number: 5281976
    Abstract: The present invention provides a thermal printing method using a sublimable dye, which is capable of faithfully printing on any kind of substrates, including plain paper without the tack sheets which make the process complicated. The method of the present invention comprises forming an image into a printing layer by heating a color layer with a printing head and then transferring the printing layer onto an image receive sheet by pressure or heat; wherein the color layer and printing layer are respectively formed on one substrate in a certain interval of distance without putting one upon another, the surface of the color layer is placed on the surface of the printing layer and heat is applied to the color layer from the substrate side with a printing head to form an image into a printing layer.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: January 25, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Yasuo Fukui, Nobuyoshi Taguchi
  • Patent number: 5217941
    Abstract: The present invention provides a dye transfer type thermal printing sheet which can give a color record image excellent in color reproducibility and weather resistance with middle shade including black and sufficiently saturated density. This printing sheet comprising a substrate on which are arranged, in face-sequence, coloring material layers which are different in hue and contain either of at least one dye represented by the formula (I), at least one dye represented by the formula (II) and at least one dye represented by the formulas (III)-(VI).
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: June 8, 1993
    Assignees: Matsushita Electric Industrial Co., Ltd., Mitsubishi Kasei Corporation
    Inventors: Tetsuji Kawakami, Akihiro Imai, Nobuyoshi Taguchi, Yukichi Murata, Takao Hirota
  • Patent number: 5145827
    Abstract: It can be obtained a receiving sheet for a dye transfer type thermal printing which is improved in a curing speed, image reliability, recording sensitivity, and dot reproducibility, and useful for high speed and/or relative-speeds printing by arranging a polymer layer on a substrate and then a cured resin layer of a moisture-curable resin on the polymer layer.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: September 8, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akihiro Imai, Tetsuji Kawakami, Hiromu Matsuda, Keiichi Yubakami, Nobuyoshi Taguchi
  • Patent number: 5146237
    Abstract: A method of resistive sheet transfer recording is disclosed, in which the thermal diffusion coefficient of a resistive sheet (1) in the range of 1 to 100.times.10.sup.-6 m.sup.2 /s is combined with that of an electrode head (2) in the range of 0.1 to 50.times.10.sup.6 m.sup.2 /s, thereby making it possible to form a high-quality image at high sensitivity and high speed.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: September 8, 1992
    Assignee: Matushita Electric Industrial Co., Ltd.
    Inventors: Nobuyoshi Taguchi, Akihiro Imai, Hiromu Matsuda, Tetsuji Kawakami, Keiichi Yubakami
  • Patent number: 5137865
    Abstract: Thermal dye transfer printing systems which are adapted for multiple-use printing modes wherein one dye transfer sheet is repeatedly used and which comprise a dye transfer sheet having, on a substrate, a dye transfer layer containing a sublimable dye and a binder resin and a dye receiving sheet having a dye receiving layer which has a diffusion rate of the dye smaller than the dye transfer layer. This is effective in suppressing a lowering of printing density owing to the increase in number of printing cycles using one dye transfer sheet. Alternatively, the dye transfer sheet is constituted such that the dye transfer layer is made of a plurality of sub-layers in which the concentration of the dye decreases from the sub-layer formed directly on the substrate toward the surface side of the dye transfer layer. The dye is invariably supplied from the higher concentration sub-layers to ensure full color printing with a remarkably increasing number of multiple-use printing cycles.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: August 11, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiromu Matsuda, Tetsuji Kawakami, Keiichi Yubakami, Akihiro Imai, Nobuyoshi Taguchi
  • Patent number: RE35349
    Abstract: The present invention relates to a method of resistive sheet transfer recording using a recording member and an electrode head comprising oppositely aligned electrode pair trains embedded in the insulating support member and also relates to an electrode head use therefor, wherein abrasive wear of the electrode pair by sliding contact of the recording member is optimized in a manner that the resistive sheet usually contacts to a fresh surface of the electrode pair train.The present invention makes it possible to give a high quality image with high recording speed and high sensitivity.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: October 8, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuyoshi Taguchi, Yasuo Fukui, Akihiro Imai