Patents by Inventor Naohiro Matsunaga

Naohiro Matsunaga 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: 20020085284
    Abstract: An object of the invention is to provide an anti-glare, anti-reflection film of which various characteristics such as anti-reflection, contamination resistance, scratch-resistance and transmission image sharpness, among which anti-reflection is particularly important, are consistent with a sufficiently high anti-glare property when the film is loaded in image display devices, in particular, a high-resolution liquid crystal display device, and which can be produced entirely by wet coating processes at a low manufacturing cost, and further provide a liquid crystal display excelling in image contrast, image visibility and image sharpness. The object is achieved by an anti-glare, anti-reflection film made of a low refractive index layer provided on a transparent support, and an anti-glare layer arranged between the transparent support and the low refractive index layer, the surface energy of the anti-glare layer being 25 mN·m−1 to 70 mN·m−1.
    Type: Application
    Filed: October 31, 2001
    Publication date: July 4, 2002
    Inventors: Kazuhiro Nakamura, Naohiro Matsunaga
  • Patent number: 6398371
    Abstract: An antiglare film is described, which comprises a triacetyl cellulose transparent support having provided thereon one or more hard coat layers including an antiglare hard coat layer, wherein the hard coat layer contiguous to the triacetyl cellulose transparent support is formed from a coating solution comprising solvents comprising one or more solvents which dissolve the triacetyl cellulose support and one or more solvents which do not dissolve the triacetyl cellulose support. A method for producing the antiglare film, a polarizer wherein the antiglare film is used and a liquid crystal display wherein the antiglare film or the polarizer is used are also described.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: June 4, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naohiro Matsunaga, Kazuhiro Nakamura
  • Publication number: 20020060849
    Abstract: An antiglare film is described, which comprises a triacetyl cellulose transparent support having provided thereon one or more hard coat layers including an antiglare hard coat layer, wherein the hard coat layer contiguous to the triacetyl cellulose transparent support is formed from a coating solution comprising solvents comprising one or more solvents which dissolve the triacetyl cellulose support and one or more solvents which do not dissolve the triacetyl cellulose support. A method for producing the antiglare film, a polarizer wherein the antiglare film is used and a liquid crystal display wherein the antiglare film or the polarizer is used are also described.
    Type: Application
    Filed: September 5, 2001
    Publication date: May 23, 2002
    Inventors: Naohiro Matsunaga, Kazuhiro Nakamura
  • Publication number: 20020034013
    Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided.
    Type: Application
    Filed: July 11, 2001
    Publication date: March 21, 2002
    Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
  • Publication number: 20010035929
    Abstract: An anti-glare and anti-reflection film (1) which comprises, on a transparent support (2), at least one anti-glare layer (4) including particles (6), and a low refractive index layer (5) superposed in this order, in which the film has an average mirror reflectance at a 5° incidence in the wavelength region of 450 to 650 nm being 1.2% or less. A polarizing plate and an image display device using the anti-glare and anti-reflection film.
    Type: Application
    Filed: March 28, 2001
    Publication date: November 1, 2001
    Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Yosuke Nishiura, Hidetoshi Watanabe
  • Patent number: 6303280
    Abstract: There is disclosed a transparent magnetic recording medium comprising at least one magnetic recording layer containing ferromagnetic particles, on a support, wherein an overcoat solution which comprises at least one kind of lubricant wax dispersion and at least one kind of anionic surfactant in an amount of 0.1% to 30%, based on the total weight of the lubricant wax dispersion, is coated on the at least one magnetic recording layer. There is also disclosed a silver halide photographic light-sensitive material having the transparent magnetic recording layer. The transparent magnetic recording medium can exhibit both a good state of coated surface and secure magnetic input/output performance. The silver halide photographic light-sensitive material can provide a silver halide photographic light-sensitive material having the transparent magnetic recording layer with the above-described property.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: October 16, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naohiro Matsunaga, Tsutomu Arai, Tomokazu Yasuda
  • Patent number: 6296996
    Abstract: There is disclosed a transparent magnetic recording medium having, on a support, at least one magnetic recording layer containing magnetic particles, which medium comprises a first set of protuberances having a height of 0.001 &mgr;m or more than 0.001 &mgr;m, but less than 0.1 &mgr;m, and a density of from 1×102 pieces/100 &mgr;m2 to 1×105 pieces/100 &mgr;m2, and a second set of protuberances having a height of from 0.1 &mgr;m to 0.5 &mgr;m, and a density of from 1 piece/100 &mgr;m2 to 200 pieces/100 &mgr;m2, on a surface that is at the side of said at least one magnetic recording layer provided, wherein the difference of height between the first set of protuberances and the second set of protuberances is 0.1 &mgr;m or more but 1.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: October 2, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Ogawa, Naohiro Matsunaga
  • Patent number: 6258519
    Abstract: There is disclosed a transparent magnetic recording medium comprising a support and at least one magnetic recording layer containing magnetic particles provided thereon, which comprises, as an upper layer coated on the magnetic recording layer, a layer that contains at least one sort of spherical inorganic particles having a Mohs' hardness of 6 to 8, the surface of the particles being treated with at least one of primary, secondary, or tertiary amine-series silane coupling agents, and that contains a higher fatty acid ester sliding agent. The transparent magnetic recording medium causes no error in magnetic input/output and also excels in transparency.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: July 10, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naohiro Matsunaga, Tsutomu Arai
  • Patent number: 5766835
    Abstract: There is disclosed a silver halide photographic light-sensitive material that comprises at least one backing layer on a support, wherein at least one of the backing layers contains a crosslinking agent of the general formula (1) in the range of from 3 to 1000 mg/m.sup.2, and at least one of the backing layers is a transparent magnetic recording layer containing abrasives that have Moh's hardness values of not less than 5.General formula (1) ##STR1## wherein n is an integer of n.gtoreq.0; m is an integer of 1 or 2; and R.sub.1, R.sub.2, and R.sub.3 each represent a hydrogen atom, an alkyl group, or an aryl group. In the light-sensitive material, the problem of emulsion peeling on the side of the back surface is hardly to arise, and in addition, an error in magnetic recording/reproducing caused after development processing is also hardly to cause.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: June 16, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Naohiro Matsunaga