Patents by Inventor Fumihiro Arakawa

Fumihiro Arakawa 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: 20070181326
    Abstract: An electromagnetic wave shielding sheet 1 comprises a transparent substrate 11, and a first anticorrosive layer 23A, a first blackening layer 25A, a metal layer 21, and a second anticorrosive layer 23B that are successively formed on the transparent substrate 11 through an adhesive layer 13. A second blackening layer 25B is formed so that it fully covers the side faces of the first anticorrosive layer 23A, the first blackening layer 25A, the metal layer 21, and the second anticorrosive layer 23B, as well as the front face of the second anticorrosive layer 23B. At least either of the first anticorrosive layer 23A and the second anticorrosive layer 23B contains one or more metals selected from nickel, chromium, and silicon, and also zinc and/or tin when it is initially formed, and the zinc and/or tin is removed from the first anticorrosive layer 23A and/or the second anticorrosive layer 23B in an intermediate steps.
    Type: Application
    Filed: January 20, 2005
    Publication date: August 9, 2007
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
  • Publication number: 20070177386
    Abstract: A light diffusion film 1 according to the present invention comprises a transparent substrate 11 and a light-diffusing layer 15 provided on the transparent substrate 11, and the light-diffusing layer 15 comprises an ionizing radiation curing resin and an ultraviolet light absorber and has, on its surface, fine irregularities 17 that have a function of diffusing light. The ultraviolet light absorber is one, or two or more compounds selected from benzotriazole ultraviolet light absorbers, salicylate ultraviolet light absorbers, and benzophenone ultraviolet light absorbers. The light-diffusing layer 15 does not contain any filler having a function of diffusing light but has, on its surface, fine irregularities 17 made by DPS.
    Type: Application
    Filed: December 28, 2004
    Publication date: August 2, 2007
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Tadahiro Masaki, Fumihiro Arakawa
  • Publication number: 20070152560
    Abstract: A method for producing a display front panel according to the present invention comprises the steps of (1) laminating a metal layer 21 to at least one surface of a transparent substrate 11 by a first transparent adhesive layer 13, thereby obtaining a laminate, (2) providing a mesh-patterned resist layer on a surface of the metal layer 21 of the laminate, etching the metal layer 21 to remove portions thereof that are not covered with the resist layer, and removing the resist layer, thereby forming a metal mesh layer 21 having a mesh part 103 with a plurality of openings 105, and a frame part 101 around the mesh part 103, and (3) laminating a near infrared ray shielding film 41 to the face of the mesh part 103 of the metal mesh layer 21 by a second transparent adhesive layer 33, and filling the surface irregularities R of the first adhesive layer 13 exposed at the openings 105 of the mesh part 103 with the second transparent adhesive layer 33 to make the exposed roughened surface R of the first adhesive layer 1
    Type: Application
    Filed: January 19, 2005
    Publication date: July 5, 2007
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
  • Publication number: 20070102192
    Abstract: An electromagnetic wave shielding filter comprises a transparent substrate 11, and a metal mesh layer 21 with line parts 107 that define openings 105 of the mesh, laminated to one surface of the transparent substrate 11 by an adhesive 13. A first blackening layer 25A and an anticorrosive layer 23A are successively formed on the surfaces, on the transparent substrate side, of the line parts 107 of the metal mesh layer 21. A second blackening layer 25B is formed on surfaces, on the side opposite to the transparent substrate 11, of the line parts 107 of the metal mesh layer 21, and also on side faces of the line parts 107.
    Type: Application
    Filed: December 14, 2004
    Publication date: May 10, 2007
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
  • Patent number: 7183499
    Abstract: An electromagnetic wave shielding sheet includes a transparent substrate 11 and a metal layer 15 provided on one surface of the transparent substrate 11 through an adhesive layer 13. The metal layer 15 includes a mesh part 103 and a frame part 101 surrounding the mesh part 103. The frame part 101 includes at least one transparent part 105 that is a metal-layer-free area. Preferably, the transparent part 105 includes a metallic portion 105a in a geometric pattern. Light transmitted by or reflected from the transparent part 105 is detected, thereby the transparent part 105 can be used as a register mark for detecting the position of the mesh part 103.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: February 27, 2007
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Daisuke Hashimoto, Fumihiro Arakawa, Yasuhiko Ishii, Yukihiro Kyoden, Eiji Oishi
  • Publication number: 20070042654
    Abstract: The present invention discloses a sheet for electromagnetic wave shielding, comprising a laminate of at least a transparent substrate film and an electromagnetic wave shielding layer. The electromagnetic wave shielding layer is formed of a meshy metal foil with densely arranged openings and being transparent. A protective film is stacked separably on the laminate either in its surface of transparent substrate film side or in its surface of electromagnetic wave shielding layer side.
    Type: Application
    Filed: October 30, 2006
    Publication date: February 22, 2007
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Fumihiro Arakawa, Eiji Ohishi, Yasuhiko Ishii
  • Publication number: 20070007036
    Abstract: An electromagnetic wave shielding sheet comprises a transparent substrate 11 and a metal layer 15 provided on one surface of the transparent substrate 11 through an adhesive layer 13. The metal layer 15 includes a mesh part 103 and a frame part 101 surrounding the mesh part 103. The frame part 101 includes at least one transparent part 105 that is a metal-layer-free area. Preferably, the transparent part 105 includes a metallic portion 105a in a geometric pattern. Light transmitted by or reflected from the transparent part 105 is detected, thereby the transparent part 105 can be used as a register mark for detecting the position of the mesh part 103.
    Type: Application
    Filed: June 15, 2004
    Publication date: January 11, 2007
    Inventors: Daisuke Hashimoto, Fumihiro Arakawa, Yasuhiko Ishii, Yukihiro Kyoden, Eiji Oishi
  • Publication number: 20060286381
    Abstract: An anti-reflection layer 51 is provided on one surface of a transparent substrate film 31. A specific-wavelength-light shielding layer 39 containing a coloring agent for color tone correction capable of absorbing light with specific wavelengths originating from the emission spectrum of an insert gas of a PDP, and/or a near infrared rays absorbing agent, is provided on the other surface of the transparent substrate film 31. Further, a pressure-sensitive adhesive layer 41 is optionally provided on the specific-wavelength-light shielding layer 39.
    Type: Application
    Filed: August 30, 2004
    Publication date: December 21, 2006
    Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
  • Publication number: 20060194020
    Abstract: On one surface of a transparent substrate film 31 is provided directly or through an adhesive a metal layer 35 including a mesh work area 203 and a frame part 201 that surrounds the mesh work area 203. To the metal layer 35 are laminated a smoothing resin layer 39 and an adhesive layer 41. The transparent substrate film 31 side surface of the metal layer 35 is subjected to blackening treatment, thereby forming on this surface a blackening treatment layer 37. The smoothing resin layer 39 contains a near infrared rays absorbing agent, and the adhesive layer 41 contains a coloring agent for color tone correction that absorbs light with specific wavelengths originating from the emission spectrum of an insert gas.
    Type: Application
    Filed: August 26, 2004
    Publication date: August 31, 2006
    Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
  • Publication number: 20060163197
    Abstract: A metal film 21 is laminated directly to or by means of an adhesive 13 to a transparent base sheet 11. A mesh metal film including lines defining apertures is formed by coating the metal film 21 with a mesh resist layer 109a patterned in a mesh, etching the metal film 21 through the mesh resist layer 109a, and removing the mesh resist layer 109a. The front surfaces and side surfaces of the lines of the mesh metal film are coated with a black coating layer 23.
    Type: Application
    Filed: April 19, 2004
    Publication date: July 27, 2006
    Inventors: Fumihiro Arakawa, Yasuhiko Ishii, Daisuke Hashimoto, Yukihiro Kyouden, Eiji Oishi
  • Publication number: 20060154092
    Abstract: A front panel for plasma display comprises a transparent substrate 11 and an electromagnetic wave shielding layer 30 provided on one surface of the transparent substrate 11 through a first transparent adhesive layer 21. The electromagnetic wave shielding layer 30 comprises a transparent substrate film 31, a metal layer 35 that includes a mesh part 203 and a frame part 201 surrounding the mesh part 203, and a smoothing resin layer 39. On the metal layer 35 is provided a blackening treatment layer 37. A third transparent adhesive layer 41 and a transparent protective layer 50 are laminated in this order to the electromagnetic wave shielding layer 30. The smoothing resin layer 39 and/or the third transparent adhesive layer 41 contains a near infrared rays absorbing agent and a coloring agent for color tone correction.
    Type: Application
    Filed: July 27, 2004
    Publication date: July 13, 2006
    Applicant: DAI NIPPON PRINTING CO., LTD
    Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
  • Patent number: 7041360
    Abstract: There is provided a protective, diffusive film for use in a surface light source device provided with a lens film, said protective, diffusive film comprising: a transparent substrate layer; and a resin layer provided on at least one of the top surface and the under surface of the transparent substrate layer, the resin layer having a tensile elongation at break in the range of 20% to 200%.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: May 9, 2006
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventors: Tadahiro Masaki, Fumihiro Arakawa
  • Patent number: 7037594
    Abstract: There is provided an electromagnetic wave shielding member which has see-through properties and electromagnetic wave shielding properties, is free from a change in color of an adhesive at the time of the formation of a mesh by etching, is improved in etchability, and can withstand etching at the time of the formation of the mesh. The electromagnetic wave shielding member according to the present invention comprises: a transparent film substrate; and a mesh consisting of a metal foil provided on the surface of the substrate through an adhesive, the adhesive comprising a styrene-maleic acid copolymer-modified polyesterpolyurethane and an aliphatic polyisocyanate.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: May 2, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroshi Kojima, Fumihiro Arakawa
  • Publication number: 20060088690
    Abstract: An electromagnetic shielding sheet 1 includes: a transparent base 11, and at least an adhesive layer 13, an antirust layer 25A and a mesh metal layer 21 formed on one of the surfaces of the base. A blackened layer 23A is sandwiched between the mesh metal layer 21 and the antirust layer 25A. At least openings 105 of the mesh metal layer 21 are filled up with a resin such that the mesh metal layer 21 has a substantially flat surface.
    Type: Application
    Filed: August 6, 2003
    Publication date: April 27, 2006
    Inventors: Fumihiro Arakawa, Yasuhiko Ishii, Daisuke Hashimoto, Yukihiro Kyoden, Eiji Ohishi
  • Publication number: 20060050387
    Abstract: An object of the present invention is to eliminate drawbacks of conventional multi-layered antireflection films, that is, that a lot of time is required in the formation of a transparent conductive thin film and a low-refractive index layer leading to low processing speed, the corrosion resistance of the transparent conductive thin film is unsatisfactory, and the reflectance over the whole visible light region is not constant.
    Type: Application
    Filed: October 19, 2005
    Publication date: March 9, 2006
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Fumihiro Arakawa, Hiroko Suzuki
  • Patent number: 7008066
    Abstract: Disclosed is an antiglare film having excellent durability. The antiglare film is disposed on the front of a display device and comprises a transparent plastic film and, formed on the transparent plastic film, at least an antiglare layer having fine concaves and convexes on its surface, wherein the antiglare layer is formed of a transparent resin and satisfies requirements that: (1) the surface of the antiglare layer has a three-dimensional ten-point mean roughness of 0.9 ?m to 3 ?m; and (2) the mean spacing between adjacent profile peaks on a three-dimensional roughness reference plane is 20 ?m to 50 ?m.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: March 7, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Taiji Suga, Tadahiro Masaki, Fumihiro Arakawa
  • Patent number: 6987354
    Abstract: A transparent conductive film 1 comprises a transparent plastic film 2 and a transparent conductive layer 4 laminated to at least one surface of the transparent plastic film 2. The transparent conductive film 1, as a whole, has a haze value of 8 or less; and at least one of the two surfaces of the transparent plastic film 2, that is, the surface to which the transparent conductive film 4 is laminated and the other surface, is provided with fine irregularities having a maximum height (Rmax) of 0.5 to 2.0 ?m. These fine irregularities preferably have a ten-point mean roughness (Rz) of 0.35 to 1.5 ?m. The fine irregularities maybe provided as the surface structure of a fine irregularity layer 3 laminated to one surface of the transparent plastic film 2. The transparent conductive layer 4 may be laminated to the surface of the fine irregularity layer 3 formed on the transparent plastic film 2, or to the surface of the transparent plastic film 2 to which the fine irregularity layer 3 is not laminated.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: January 17, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Fumihiro Arakawa, Taiji Suga
  • Publication number: 20050244608
    Abstract: An electromagnetic shielding sheet is capable of shielding electromagnetic radiation generated by a display, has a proper transparency and uniformly distributed meshes, prevents the occurrence of white and/or black spot defects and linear defects and glaring, and ensures the satisfactory visibility of images. The electromagnetic shielding sheet has a conductive structure (109) having lines (107) having straight parts of widths (W) in the range of C(1±30%), where C is a predetermined value. The radius (r) of curvature of a side surface (107S) extending between the upper side (107U) and the lower side (107B) of a bank in a section of the lines (107) in a plane perpendicular to the transparent sheet meet a condition expressed by: 1.5t<r<3.0t, where t is the thickness of the conductive structure (109).
    Type: Application
    Filed: August 8, 2003
    Publication date: November 3, 2005
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Fumihiro Arakawa, Yasuhiko Ishii, Daisuke Hashimoto, Yukihiro Kyoden, Eiji Ohishi
  • Publication number: 20050244609
    Abstract: An electromagnetic shielding sheet of the present invention includes a transparent base sheet and a metal layer attached to one surface of the transparent base sheet. The metal layer has a mesh part, a peripheral mesh part surrounding the mesh part, and a grounding frame surrounding the peripheral mesh part. A width of lines forming meshes in the peripheral mesh part gradually increases from the mesh part toward the grounding frame. The lines of the electromagnetic shielding sheet are scarcely bent or broken in all processes including fabricating and assembling processes, and the electromagnetic shielding sheet is excellent in handling ease.
    Type: Application
    Filed: August 6, 2003
    Publication date: November 3, 2005
    Inventors: Fumihiro Arakawa, Yasuhiko Ishii, Daisuke Hashimoto, Yukihiro Kyoden, Eiji Ohishi
  • Publication number: 20050231807
    Abstract: Disclosed is an antiglare film having excellent durability. The antiglare film is disposed on the front of a display device and comprises a transparent plastic film and, formed on the transparent plastic film, at least an antiglare layer having fine concaves and convexes on its surface, wherein the antiglare layer is formed of a transparent resin and satisfies requirements that: (1) the surface of the antiglare layer has a three-dimensional ten-point mean roughness of 0.9 ?m to 3 ?m; and (2) the mean spacing between adjacent profile peaks on a three-dimensional roughness reference plane is 20 ?m to 50 ?m.
    Type: Application
    Filed: May 11, 2005
    Publication date: October 20, 2005
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Taiji Suga, Tadahiro Masaki, Fumihiro Arakawa