Patents by Inventor Tamami Iwata
Tamami Iwata 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).
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Patent number: 5575507Abstract: The present invention relates to a heat transfer recording medium in which a substrate has items of information such as an image and characters formed on a surface thereof by heat transfer and a transparent protective layer is provided on at least a part of the surface of the thus recorded information through an adhesive layer, if required, characterized in that the adhesive layer and/or protective layer function to provide security against counterfeiting. Combining information recorded by heat transfer with a function to provide security against counterfeiting, the present invention provides greater security against falsifying or counterfeiting.Type: GrantFiled: December 5, 1995Date of Patent: November 19, 1996Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Mineo Yamauchi, Katsuyuki Oshima, Jitsuhiko Ando, Masanori Torii, Hideo Fujimura, Tamami Iwata
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Patent number: 5496072Abstract: The present invention relates to a heat transfer recording medium in which a substrate has items of information such as an image and characters formed on the surface thereof by heat transfer and a transparent protective layer is provided on at least a part of the surface of the thus recorded information through an adhesive layer, if required, characterized in that the adhesive layer and/or protective layer function to provide security against counterfeiting. Combining information recorded by heat transfer with a function to provide security against counterfeiting, the present invention provides greater security against falsifying or counterfeiting.Type: GrantFiled: November 14, 1994Date of Patent: March 5, 1996Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Mineo Yamauchi, Katsuyuki Oshima, Jitsuhiko Ando, Masanori Torii, Hideo Fujimura, Tamami Iwata
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Patent number: 5387013Abstract: The present invention relates to a heat transfer recording medium in which a substrate has items of information such as an image and characters formed on a surface thereof by heat transfer and a transparent protective layer is provided on at least a part of the surface of the thus recorded information through an adhesive layer, if required, characterized in that the adhesive layer and/or protective layer function to provide security against counterfeiting. Combining information recorded by heat transfer with a function to provide security against counterfeiting, the present invention provides greater security against falsifying or counterfeiting.Type: GrantFiled: September 9, 1993Date of Patent: February 7, 1995Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Mineo Yamauchi, Tamami Iwata
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Patent number: 5267755Abstract: The present invention relates to a heat transfer recording medium in which a substrate items of information such as an image and characters formed on a surface thereof by heat transfer and a transparent protective layer is provided on at least a part of the surface of the thus recorded information through an adhesive layer, if required, characterized in that the adhesive layer and/or protective layer function to provide security against counterfeiting. Combining information recorded by heat transfer with a function to provide security against counterfeiting, the present invention provides greater security against falsifying or counterfeiting.Type: GrantFiled: October 1, 1990Date of Patent: December 7, 1993Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Mineo Yamauchi, Katsuyuki Oshima, Jitsuhiko Ando, Masanori Torii, Hideo Fujimura, Tamami Iwata
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Patent number: 5268348Abstract: The present invention relates to an image-receiving sheet used in combination with a heat transfer sheet having a dye layer containing a dye which is melted or sublimated by heating and passed onto said image-receiving sheet, characterized in that a sheet-like substrate (11) includes on its surface a dye-receiving layer (12) for receiving a dye coming from said heat transfer sheet, said dye-receiving layer (12) comprising a copolymer obtained by the copolymerization of (i) vinyl chloride, (ii) an acrylic acid type monomer and (iii) a linear polymer having a vinyl group at an end. The present sheet of such a structure as mentioned above is improved in terms of dyeability and weather-resistance-after-printing, and excels particularly in the storability of printed images.Type: GrantFiled: May 11, 1992Date of Patent: December 7, 1993Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Noritaka Egashira, Yoshinori Nakamura, Tamami Iwata, Naoto Satake, Takashi Kawasawa, Kiyobumi Ohtake
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Patent number: 5250497Abstract: A heat transfer sheet including comprising a heat migratable dye layer formed on one surface of a substrate film and a heat-resistant layer formed on the other surface, of the substrate film, wherein the substrate film includes a polyethylene naphthalate.Type: GrantFiled: February 7, 1992Date of Patent: October 5, 1993Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Hideo Fujimura, Noritaka Egashira, Tamami Iwata, Naoto Satake
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Patent number: 5135905Abstract: The present invention relates to an image-receiving sheet used in combination with a heat transfer sheet having a dye layer containing a dye which is melted or sublimated by heating and passed onto said image-receiving sheet, characterized in that a sheet-like substrate (11) includes on its surface a dye-receiving layer (12) for receiving a dye coming from said heat transfer sheet, said dye-receiving layer (12) comprising a copolymer obtained by the copolymerization of (i) vinyl chloride, (ii) an acrylic acid type monomer and (iii) a linear polymer having a vinyl group at an end. The present sheet of such a structure as mentioned above is improved in terms of dyeability and weather-resistance-after-printing, and excels particularly in the storability of printed images.Type: GrantFiled: October 1, 1990Date of Patent: August 4, 1992Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Noritaka Egashira, Yoshinori Nakamura, Tamami Iwata, Naoto Satake, Takashi Kawasawa, Kiyobumi Ohtake
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Patent number: 5053382Abstract: The dye receiving sheet for preparation of a transparency according to the present invention is a sheet to be used in combination with a heat transfer sheet having a dye layer formed thereon and includes (2) a transparent substrate, (3) a transparent receiving layer provided on the transparent substrate for receiving the dye migrating from the heat transfer sheet corresponding to the energy applied from a thermal head and (5) an optically detectable layer provided on at least a part of the heat transferable sheet. By the provision of the optically detectable layer (5), improvement of running performance, operability within a heat-sensitive device as well as image density and sensitivity during printing can be attained, and also a detection mark can be freely added, whereby operability of the dye receiving sheet can be further improved.Type: GrantFiled: October 25, 1989Date of Patent: October 1, 1991Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Masanori Akada, Noritaka Egashira, Mikizo Mizuno, Masaki Kutsukake, Yoshikazu Ito, Tatsuya Kita, Masahisa Yamaguchi, Takao Suzuki, Hitoshi Arita, Kazuyoshi Sorimachi, Tamami Iwata
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Patent number: 4910188Abstract: The dye receiving sheet for preparation of a transparency according to the present invention is a sheet to be used in combination with a heat transfer sheet having a dye layer formed thereon and includes (2) a transparent substrate, (3) a transparent receiving layer provided on the transparent substrate for receiving the dye migrating from the heat transfer sheet corresponding to the energy applied from a thermal head and (5) an optically detectable layer provided on at least a part of the heat transferable sheet. By the provision of the optically detectable layer (5), improvement of running performance, operability within a heat-sensitive device as well as image density and sensitivity during printing can be attained, and also a detection mark can be freely added, whereby operability of the dye receiving sheet can be further improved.Type: GrantFiled: June 17, 1988Date of Patent: March 20, 1990Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Masanori Akada, Noritaka Egashira, Mikizo Mizuno, Masaki Kutsukake, Yoshikazu Ito, Tatsuya Kita, Masahisa Yamaguchi, Takao Suzuki, Hitoshi Arita, Kazuyoshi Sorimachi, Tamami Iwata
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Patent number: 4837200Abstract: An image-receiving sheet for thermal transfer printing comprising on a substrate an intermediate layer made primarily of a resin insoluble in organic solvents, and an image-receiving layer made primarily of a resin soluble in organic solvents and formed on the intermediate layer. This type of sheet is significantly improved in smoothness and blocking properties, enabling one to obtain print images of a very high quality, by thermal transfer printing, which are substantially free from the known problem relating to a missing transfer portion and which are high in the optical density for images as printed.Type: GrantFiled: July 21, 1988Date of Patent: June 6, 1989Assignees: Kanzaki Paper Manufacturing Co., Ltd., Dai Nippon Insatsu Kabushiki KaishaInventors: Hiromasa Kondo, Yoshitaka Okumura, Terunobu Fukui, Noritaka Egashira, Tamami Iwata, Naoto Satake