Patents by Inventor Kano Sakamoto

Kano Sakamoto 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).

  • Publication number: 20200062016
    Abstract: A thermal transfer sheet which can prevent a kick and a scumming, and can form a photographic tone color image of high quality with a continuous tone image by sublimation transfer; a coating liquid for colorant layer to be used for forming the colorant layer of this thermal transfer sheet; a method for manufacturing this thermal transfer sheet; and image forming method employing this thermal transfer sheet. The problem is solved by a thermal transfer sheet (1) in which at least a colorant layer (3) is layered on a substrate sheet (2), wherein the colorant layer (3) contains a predetermined solvent, a colorant (10x) dispersible in the predetermined solvent, a dispersant, and a binder resin, and the dispersant being one or more selected from the group consisting of polyether-based dispersants, graft type polymer dispersants, acryl-based block type polymer dispersants, urethane-based polymer dispersants and azo-based dispersants.
    Type: Application
    Filed: November 1, 2019
    Publication date: February 27, 2020
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Kazuya YOSHIDA, Hiroaki SEGAWA, Tomohiko IMODA, Yoshimasa KOBAYASHI, Tomoko SUZUKI, Hiroyuki HASEGAWA, Kano SAKAMOTO
  • Patent number: 10525757
    Abstract: The purpose of the present invention is to provide a thermal transfer sheet which can prevent a kick and a scumming, and can form a photographic tone color image of high quality with a continuous tone image by sublimation transfer, while expanding the range of choices for colorants to be included in a colorant layer; a coating liquid for colorant layer to be used for forming the colorant layer of this thermal transfer sheet; a method for manufacturing this thermal transfer sheet; and image forming method employing this thermal transfer sheet.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: January 7, 2020
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Kazuya Yoshida, Hiroaki Segawa, Tomohiko Imoda, Yoshimasa Kobayashi, Tomoko Suzuki, Hiroyuki Hasegawa, Kano Sakamoto
  • Patent number: 9889694
    Abstract: Provided is a support for a thermal transfer image-receiving sheet, capable of obtaining a thermal transfer image-receiving sheet that has favorable stability against curl and is excellent in the texture of a print surface in the case of print under the environmental conditions of high temperature and high humidity. A support for a thermal transfer image-receiving sheet according to the present invention includes a porous layer composed of a porous film, a first polyolefin resin layer, a substrate layer, and a second polyolefin resin layer that are layered in the order mentioned, in which the first polyolefin resin layer has a density of 0.93 g/cm3 or less; and the second polyolefin resin layer has a density of more than 0.93 g/cm3.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: February 13, 2018
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Makoto Aoyagi, Kano Sakamoto, Katsuyuki Hirano, Munenori Ieshige
  • Publication number: 20170348992
    Abstract: The purpose of the present invention is to provide a thermal transfer sheet which can prevent a kick and a scumming, and can form a photographic tone color image of high quality with a continuous tone image by sublimation transfer, while expanding the range of choices for colorants to be included in a colorant layer; a coating liquid for colorant layer to be used for forming the colorant layer of this thermal transfer sheet; a method for manufacturing this thermal transfer sheet; and image forming method employing this thermal transfer sheet.
    Type: Application
    Filed: August 18, 2017
    Publication date: December 7, 2017
    Inventors: Kazuya YOSHIDA, Hiroaki SEGAWA, Tomohiko IMODA, Yoshimasa KOBAYASHI, Tomoko SUZUKI, Hiroyuki HASEGAWA, Kano SAKAMOTO
  • Patent number: 9764580
    Abstract: The purpose of the present invention is to provide a thermal transfer sheet which can prevent a kick and a scumming, and can form a photographic tone color image of high quality with a continuous tone image by sublimation transfer, while expanding the range of choices for colorants to be included in a colorant layer; a coating liquid for colorant layer to be used for forming the colorant layer of this thermal transfer sheet; a method for manufacturing this thermal transfer sheet; and image forming method employing this thermal transfer sheet.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: September 19, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kazuya Yoshida, Hiroaki Segawa, Tomohiko Imoda, Yoshimasa Kobayashi, Tomoko Suzuki, Hiroyuki Hasegawa, Kano Sakamoto
  • Publication number: 20170100953
    Abstract: Provided is a support for a thermal transfer image-receiving sheet, capable of obtaining a thermal transfer image-receiving sheet that has favorable stability against curl and is excellent in the texture of a print surface in the case of print under the environmental conditions of high temperature and high humidity. A support for a thermal transfer image-receiving sheet according to the present invention includes a porous layer composed of a porous film, a first polyolefin resin layer, a substrate layer, and a second polyolefin resin layer that are layered in the order mentioned, in which the first polyolefin resin layer has a density of 0.93 g/cm3 or less; and the second polyolefin resin layer has a density of more than 0.93 g/cm3.
    Type: Application
    Filed: March 27, 2015
    Publication date: April 13, 2017
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Makoto AOYAGI, Kano SAKAMOTO, Katsuyuki HIRANO, Munenori IESHIGE
  • Patent number: 9527327
    Abstract: The purpose is to provide a protective layer transfer sheet and an intermediate transfer medium, in which a transfer layer has excellent foil tearing property during transfer and in which sufficient durability can be imparted to the thermally transferred image. The above problem is solved by a protective layer transfer sheet (100) in which a transfer layer (20) is provided on one surface of a substrate (1) so as to be peelable from the substrate (1), wherein the transfer layer (20) comprises a peeling layer (2) and a protective layer (3) which are layered in this order from the substrate; wherein the protective layer (3) includes an acrylic polyol resin having a glass transition temperature (Tg) of more than 80° C. or a polyester polyurethane resin having a glass transition temperature (Tg) of not less than 50° C.; and wherein the peeling layer includes at least one selected from a group consisting of polyester resins, acrylic urethane resins, and epoxy resins.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: December 27, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Junpei Oomura, Kenzo Hayashi, Mitsuhiro Oota, Kano Sakamoto, Shinya Yoda
  • Patent number: 9393825
    Abstract: Provided is an intermediate transfer medium. The intermediate transfer medium includes a substrate, a protective layer and a receiving layer. The protective layer includes two or more binder resin varieties and a filler. A mixed binder resin which includes the two or more binder resin types has a storage elastic modulus G??1.0×105 Pa and ?1.0×109 Pa at 70° C.-90° C., and the storage elastic modulus G? of more than 1.0×109 Pa at 35° C. The mixed binder resin includes a binder resin having a number average molecular weight (Mn) of not less than 8,000 and not more than 30,000, and a glass transition temperature (Tg) of not less than 36° C. and not more than 60° C.; The filler has a particle diameter of not less than 1 nm and not more than 200 nm.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: July 19, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kano Sakamoto, Shinya Yoda
  • Patent number: 9387653
    Abstract: The purpose is to provide a protective layer transfer sheet and an intermediate transfer medium, in which the protective layer has excellent foil tearing property during transfer and in which sufficient durability can be imparted to the thermally transferred image. The above problem is solved by a protective layer transfer sheet in which a transferable protective layer (20) is provided on one surface of a substrate (1) so as to be peelable from the substrate (1), wherein the transferable protective layer (20) has a layered structure in which a first protective layer (3A), and a second protective layer (3B) which is in contact directly with the first protective layer (3A), are provided in this order from the substrate (1); the first protective layer contains an epoxy-cured resin in which a reactive resin having a functional group capable of reacting with an epoxy group and having a glass transition temperature (Tg) of not less than 60° C.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: July 12, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Junpei Oomura, Kenzo Hayashi, Mitsuhiro Oota, Kano Sakamoto, Shinya Yoda
  • Patent number: 9381765
    Abstract: Disclosed are an intermediate transfer medium excelling in peel-off property on removing a transfer layer which include a protective layer with the aid of a peel-off layer of a thermal transfer sheet, and imparting a high durability to a print which is formed by transferring the transfer layer to a transfer receiving article, and retransferring the transfer layer onto the transfer receiving article easily, and a combination of the intermediate transfer medium and a thermal transfer sheet. The intermediate transfer medium includes a substrate sheet, a protective layer and a receiving layer which are layered on a surface of the substrate sheet. The protective layer includes two or more binder resins with mutually different number average molecular weights. A sum total of products, each calculated by multiplying the number average molecular weight of individual binder resin and its content ratio in the blend together, is ?3000 and ?17000.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 5, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kano Sakamoto, Shinya Yoda
  • Publication number: 20160082707
    Abstract: The purpose is to provide a protective layer transfer sheet and an intermediate transfer medium, in which the protective layer has excellent foil tearing property during transfer and in which sufficient durability can be imparted to the thermally transferred image. The above problem is solved by a protective layer transfer sheet in which a transferable protective layer (20) is provided on one surface of a substrate (1) so as to be peelable from the substrate (1), wherein the transferable protective layer (20) has a layered structure in which a first protective layer (3A), and a second protective layer (3B) which is in contact directly with the first protective layer (3A), are provided in this order from the substrate (1); the first protective layer contains an epoxy-cured resin in which a reactive resin having a functional group capable of reacting with an epoxy group and having a glass transition temperature (Tg) of not less than 60° C.
    Type: Application
    Filed: March 20, 2014
    Publication date: March 24, 2016
    Inventors: Junpei OOMURA, Kenzo HAYASHI, Mitsuhiro OOTA, Kano SAKAMOTO, Shinya YODA
  • Publication number: 20160067997
    Abstract: The purpose is to provide a protective layer transfer sheet and an intermediate transfer medium, in which a transfer layer has excellent foil tearing property during transfer and in which sufficient durability can be imparted to the thermally transferred image. The above problem is solved by a protective layer transfer sheet (100) in which a transfer layer (20) is provided on one surface of a substrate (1) so as to be peelable from the substrate (1), wherein the transfer layer (20) comprises a peeling layer (2) and a protective layer (3) which are layered in this order from the substrate; wherein the protective layer (3) includes an acrylic polyol resin having a glass transition temperature (Tg) of more than 80° C. or a polyester polyurethane resin having a glass transition temperature (Tg) of not less than 50° C.; and wherein the peeling layer includes at least one selected from a group consisting of polyester resins, acrylic urethane resins, and epoxy resins.
    Type: Application
    Filed: March 28, 2014
    Publication date: March 10, 2016
    Inventors: Junpei OOMURA, Kenzo HAYASHI, Mitsuhiro OOTA, Kano SAKAMOTO, Shinya YODA
  • Patent number: 9272560
    Abstract: Provided is a thermal transfer sheet capable of repressing residue that accumulates before insertion of a heating element of the thermal head. In the thermal transfer sheet, a heat-resistant lubricating layer is formed on a surface of the substrate, wherein the heat-resistant lubricating layer includes one or more of layers which include a back face layer, the back face layer is arranged at a position farthest from the substrate, at least one layer which composes the heat-resistant lubricating layer includes a binder resin and organic minute particles which each has a polygonal shape, and a portion of surfaces of the organic minute particles protrude from a surface of the back layer.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: March 1, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tomoko Suzuki, Yoshimasa Kobayashi, Kano Sakamoto
  • Publication number: 20160039237
    Abstract: The purpose of the present invention is to provide a thermal transfer sheet which can prevent a kick and a scumming, and can form a photographic tone color image of high quality with a continuous tone image by sublimation transfer, while expanding the range of choices for colorants to be included in a colorant layer; a coating liquid for colorant layer to be used for forming the colorant layer of this thermal transfer sheet; a method for manufacturing this thermal transfer sheet; and image forming method employing this thermal transfer sheet.
    Type: Application
    Filed: March 28, 2014
    Publication date: February 11, 2016
    Inventors: Kazuya YOSHIDA, Hiroaki SEGAWA, Tomohiko IMODA, Yoshimasa KOBAYASHI, Tomoko SUZUKI, Hiroyuki HASEGAWA, Kano SAKAMOTO
  • Publication number: 20150328913
    Abstract: Provided is an intermediate transfer medium. The intermediate transfer medium includes a substrate, a protective layer and a receiving layer. The protective layer includes two or more binder resin varieties and a filler. A mixed binder resin which includes the two or more binder resin types has a storage elastic modulus G??1.0×105 Pa and ?1.0×109 Pa at 70° C.-90° C., and the storage elastic modulus G? of more than 1.0×109 Pa at 35° C. The mixed binder resin includes a binder resin having a number average molecular weight (Mn) of not less than 8,000 and not more than 30,000, and a glass transition temperature (Tg) of not less than 36° C. and not more than 60° C.; The filler has a particle diameter of not less than 1 nm and not more than 200 nm.
    Type: Application
    Filed: February 26, 2013
    Publication date: November 19, 2015
    Inventors: KANO SAKAMOTO, SHINYA YODA
  • Publication number: 20150239273
    Abstract: Disclosed are an intermediate transfer medium excelling in peel-off property on removing a transfer layer which include a protective layer with the aid of a peel-off layer of a thermal transfer sheet, and imparting a high durability to a print which is formed by transferring the transfer layer to a transfer receiving article, and retransferring the transfer layer onto the transfer receiving article easily, and a combination of the intermediate transfer medium and a thermal transfer sheet. The intermediate transfer medium includes a substrate sheet, a protective layer and a receiving layer which are layered on a surface of the substrate sheet. The protective layer includes two or more binder resins with mutually different number average molecular weights. A sum total of products, each calculated by multiplying the number average molecular weight of individual binder resin and its content ratio in the blend together, is ?3000 and ?17000.
    Type: Application
    Filed: September 25, 2013
    Publication date: August 27, 2015
    Inventors: Kano Sakamoto, Shinya Yoda
  • Publication number: 20140212604
    Abstract: Provided is a thermal transfer sheet capable of repressing residue that accumulates before insertion of a heating element of the thermal head. In the thermal transfer sheet, a heat-resistant lubricating layer is formed on a surface of the substrate, wherein the heat-resistant lubricating layer includes one or more of layers which include a back face layer, the back face layer is arranged at a position farthest from the substrate, at least one layer which composes the heat-resistant lubricating layer includes a binder resin and organic minute particles which each has a polygonal shape, and a portion of surfaces of the organic minute particles protrude from a surface of the back layer.
    Type: Application
    Filed: September 26, 2012
    Publication date: July 31, 2014
    Applicant: DAI Nippon Printing Co., Ltd
    Inventors: Tomoko Suzuki, Yoshimasa Kobayashi, Kano Sakamoto
  • Patent number: 8717397
    Abstract: There is provided a thermal transfer sheet that, by virtue of flexibility and heat resistance imparted by a primer layer constituting the thermal transfer sheet, is less likely to be broken even upon exposure to a high level of thermal energy and is highly suitable for high-speed printing. The thermal transfer sheet has a thermally transferable colorant layer provided on one surface of a base material sheet, and a heat-resistant slipping layer provided on the other surface of the base material sheet through a primer layer. The primer layer contains at least a polyvinyl alcohol resin and a crosslinking agent.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: May 6, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomoko Suzuki, Yoshimasa Kobayashi, Kano Sakamoto, Shinya Yoda, Mitsuhiro Oota
  • Publication number: 20130135417
    Abstract: There is provided a thermal transfer sheet that, by virtue of flexibility and heat resistance imparted by a primer layer constituting the thermal transfer sheet, is less likely to be broken even upon exposure to a high level of thermal energy and is highly suitable for high-speed printing. The thermal transfer sheet has a thermally transferable colorant layer provided on one surface of a base material sheet, and a heat-resistant slipping layer provided on the other surface of the base material sheet through a primer layer. The primer layer contains at least a polyvinyl alcohol resin and a crosslinking agent.
    Type: Application
    Filed: August 25, 2010
    Publication date: May 30, 2013
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tomoko Suzuki, Yoshimasa Kobayashi, Kano Sakamoto, Shinya Yoda, Mitsuhiro Oota