Patents Assigned to Kimoto Co., Ltd.
  • Patent number: 11780987
    Abstract: Provided are a light-blocking member, a black resin composition, and a black resin molded article in which the optical density per predetermined thickness is increased. In a light-blocking member (1) comprising a substrate (2) and a light-blocking membrane (3) provided on at least one surface of this substrate (2), the light-blocking membrane (3) containing a binder resin (31), a first black pigment (32) having an average particle diameter D50 of 0.4 to 2.5 ?m, and a second black pigment (33) having an average particle diameter D50 smaller than this is employed. The average particle diameter D50 of the second black pigment (33) is preferably 0.01 to 0.3 ?m. The optical density of the light-blocking membrane (3) is preferably 0.54 to 2.00 (?m?1) in terms of thickness.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: October 10, 2023
    Assignee: KIMOTO CO., LTD.
    Inventor: Tsuyoshi Nagahama
  • Publication number: 20220299682
    Abstract: There is provided a light diffusion film in which a decrease in the half-value angle can be suppressed even after processing with a high elongation rate. A light diffusion film including a base material film and a light diffusing layer, the light diffusing layer containing light diffusing particles and a resin binder, wherein a ratio (T/t) of an average film thickness T of the light diffusing layer, to an average particle diameter t of the light diffusing particles, is 3.0 or more.
    Type: Application
    Filed: September 23, 2020
    Publication date: September 22, 2022
    Applicant: KIMOTO CO., LTD.
    Inventors: Sho SUZUKI, Tatsuya KATO, Kazutoshi TACHIBANA
  • Publication number: 20220169810
    Abstract: The present invention provides, for example, a laminated film for molding, which not only has a hard coating ability equal to or more than conventional one, but also is improved in shape followability of the entire laminated film. The laminated film for molding of the present invention includes at least a substrate film, a hard coating layer, and a functional layer in the listed order, in which the hard coating layer includes at least a resin and 1 to 50 parts by mass of an inorganic oxide particle based on 100 parts by mass of the entire resin component included in the hard coating layer.
    Type: Application
    Filed: March 9, 2020
    Publication date: June 2, 2022
    Applicant: KIMOTO CO., LTD.
    Inventors: Sho SUZUKI, Tatsuya KATO, Kazutoshi TACHIBANA
  • Publication number: 20220171104
    Abstract: A low reflective film includes a first resin layer. The first resin layer includes a binder resin and an organic resin particle having an average particle size D50 of 2 to 20 ?m. A surface of the first resin layer has a reflectance and gloss values satisfying the following relationships: (1) regular reflectance at 70 degrees: 0.0% or more and 2.5% or less (wavelength 550 nm); (2) specular gloss value at 60 degrees: 0.0% or more and 6.0% or less; specular gloss value at 75 degrees: 0.0% or more and 6.0% or less; specular gloss value at 85 degrees: 0.0% or more and 6.0% or less; and (3) a sum of a specular gloss value at 20°, a specular gloss value at 45°, the specular gloss value at 60°, the specular gloss value at 75°, and the specular gloss value at 85° is 7.5% or less.
    Type: Application
    Filed: March 6, 2020
    Publication date: June 2, 2022
    Applicant: KIMOTO CO., LTD.
    Inventors: Kazuhiro NOZAWA, Tsuyoshi NAGAHAMA, Shuzo TOMIZAWA
  • Publication number: 20220163696
    Abstract: To provide a hard coating film and a display device which are enhanced in feeling of uniformity of designability between a display area of a display and an area therearound and which are according to a new design concept. A smoke hard coating film 100 including at least a hard coating layer 21 containing a curing resin and a colorant dispersed in the curing resin, and a print layer 41 for partition and formation of a frame area FA and a display area DA disposed in the frame area FA in planar view, and having a total light transmittance (according to JIS K7361-1) of the display area DA, of 0.5% or more and less than 75%, is used in a display device 200 provided with a light-emitting display D. A difference (|RDA-RF|) between a reflectance of the display area DA (RDA) at 550 nm in a SCI mode and a reflectance of the frame area FA (RFA) at 550 nm in the SCI mode in turn off of the display is 5% or less in a state where the smoke hard coating film 100 is provided on the display surface.
    Type: Application
    Filed: March 9, 2020
    Publication date: May 26, 2022
    Applicant: KIMOTO CO., LTD.
    Inventors: Kazutoshi TACHIBANA, Sho SUZUKI, Tatsuya KATO
  • Patent number: 11256006
    Abstract: There are provided a multilayer light-blocking film and the like whose front and back surfaces are easy to discriminate while they have light-blocking layers having high optical density whose front and back are usually difficult to discriminate. A multilayer light-blocking film 100 has a multilayer structure comprising at least a substrate film 11, a light-blocking layer 21 provided on one major surface 11a side of this substrate film 11, and a light-blocking layer 31 provided on the other major surface 11b side, the light-blocking layer 21 and the light-blocking layer 31 have an optical density of 2.5 or more in total, and the difference between the 60-degree glossiness of the light-blocking layer 21 and the 60-degree glossiness of the light-blocking layer 31 is 0.1% or more and 9.9% or less.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: February 22, 2022
    Assignee: KIMOTO CO, LTD.
    Inventor: Tsuyoshi Nagahama
  • Publication number: 20210124267
    Abstract: A photosensitive film of the present invention includes a carrier film having a first surface whose surface roughness is 0.1 to 0.4 ?m, and a photosensitive layer formed on the first surface, in which a haze of the carrier film is 30 to 65%, and a spectral haze at a wavelength of 405 nm of the carrier film, as measured by providing a transparent resin layer in which a difference between a refractive index of the transparent resin layer and a refractive index of the photosensitive layer is within ±0.02 on the first surface, is 0.1 to 9.0%.
    Type: Application
    Filed: May 9, 2019
    Publication date: April 29, 2021
    Applicants: Showa Denko Materials Co., Ltd., KIMOTO CO., LTD.
    Inventors: Hideki ETORI, Keiko KITAMURA, Yoshiaki FUSE, Nobuhito KOMURO
  • Patent number: 10975253
    Abstract: Provided are a light-blocking member, a black resin composition, and a black resin molded article having excellent durability and solvent resistance, and the like. In a light-blocking member (1) comprising a substrate (11) and a light-blocking membrane (21) provided on at least one surface of this substrate (11), the light-blocking membrane (21) containing an ultraviolet curable resin as a binder resin and containing a black pigment as a filler dispersed in this binder resin is employed. The light-blocking membrane (21) preferably further contains photo- and/or thermal polymerization initiators. In addition, the content of the filler in the light-blocking membrane (21) is preferably 10% by mass or more and 60% by mass or less in terms of solids based on all resin components contained in the light-blocking membrane (21).
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: April 13, 2021
    Assignee: KIMOTO CO., LTD.
    Inventor: Tsuyoshi Nagahama
  • Patent number: 10634825
    Abstract: Provided is a method for producing a light-blocking material for optical devices which is provided with a light-blocking coat achieving low gloss while maintaining the necessary physical properties of a light-blocking coat, i.e. a light-blocking property, even when the light-blocking coat is formed extremely thinly. In the method for producing the light-blocking material for optical devices which is provided with the light-blocking coat, a coating liquid including at least a binder resin, black microparticles, and a dye is prepared. A dye including a metal such as chrome oxide, iron oxide, or cobalt oxide is preferably used as the dye. The coating liquid is subsequently applied to a base material, and dried to form the light-blocking coat.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: April 28, 2020
    Assignee: KIMOTO CO., LTD.
    Inventors: Tsuyoshi Nagahama, Yasumaro Toshima
  • Publication number: 20180134862
    Abstract: Provided are a light-blocking member, a black resin composition, and a black resin molded article in which the optical density per predetermined thickness is increased, and the like. In a light-blocking member (1) comprising a substrate (2) and a light-blocking membrane (3) provided on at least one surface of this substrate (2), the light-blocking membrane (3) containing a binder resin (31), a first black pigment (32) having an average particle diameter D50 of 0.4 to 2.5 ?m, and a second black pigment (33) having an average particle diameter D50 smaller than this is employed. The average particle diameter D50 of the second black pigment (33) is preferably 0.01 to 0.3 ?m. The optical density of the light-blocking membrane (3) is preferably 0.54 to 2.00 (?m?1) in terms of thickness.
    Type: Application
    Filed: May 17, 2016
    Publication date: May 17, 2018
    Applicant: KIMOTO CO., LTD.
    Inventor: Tsuyoshi NAGAHAMA
  • Publication number: 20180118959
    Abstract: Provided are a light-blocking member, a black resin composition, and a black resin molded article having excellent durability and solvent resistance, and the like. In a light-blocking member (1) comprising a substrate (11) and a light-blocking membrane (21) provided on at least one surface of this substrate (11), the light-blocking membrane (21) containing an ultraviolet curable resin as a binder resin and containing a black pigment as a filler dispersed in this binder resin is employed. The light-blocking membrane (21) preferably further contains photo- and/or thermal polymerization initiators. In addition, the content of the filler in the light-blocking membrane (21) is preferably 10% by mass or more and 60% by mass or less in terms of solids based on all resin components contained in the light-blocking membrane (21).
    Type: Application
    Filed: May 17, 2016
    Publication date: May 3, 2018
    Applicant: KIMOTO CO., LTD.
    Inventor: Tsuyoshi NAGAHAMA
  • Patent number: 9692412
    Abstract: Provided is a surface protective sheet whereby antifouling properties are enhanced and excellent wiping properties and sliding properties are ensured, the present invention is a surface protective sheet (1) having a protective film (3) on a surface of a substrate (2). The protective film (3) is configured from a cured product of a curable composition, the curable composition includes a coating material and a curable resin. The coating material is configured from a reaction product of at least compounds A, B, C and D. Compound A is an acrylic polymer having a hydroxyl group in a side chain thereof, compound B is a diisocyanate, compound C is a polyether polyol, and compound D is a photopolymerizable compound having both a hydroxyl group and a photopolymerizable group.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: June 27, 2017
    Assignee: KIMOTO CO., LTD.
    Inventors: Yutaka Shibata, Hikaru Nishinaga
  • Publication number: 20170146701
    Abstract: Provided is a method for producing a light-blocking material for optical devices which is provided with a light-blocking coat achieving low gloss while maintaining the necessary physical properties of a light-blocking coat, i.e. a light-blocking property, even when the light-blocking coat is formed extremely thinly. In the method for producing the light-blocking material for optical devices which is provided with the light-blocking coat, a coating liquid including at least a binder resin, black microparticles, and a dye is prepared. A dye including a metal such as chrome oxide, iron oxide, or cobalt oxide is preferably used as the dye. The coating liquid is subsequently applied to a base material, and dried to form the light-blocking coat.
    Type: Application
    Filed: May 19, 2015
    Publication date: May 25, 2017
    Applicant: KIMOTO CO., LTD.
    Inventors: Tsuyoshi NAGAHAMA, Yasumaro TOSHIMA
  • Patent number: 9519085
    Abstract: A light diffusing sheet can include a diffusion layer. The diffusion layer has a surface profile that satisfies certain conditions.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 13, 2016
    Assignee: KIMOTO CO., LTD.
    Inventors: Hiroshi Yokota, Shingo Ohsaku
  • Patent number: 9405042
    Abstract: Provided is a method of manufacturing a light-shielding material for use in optical instrument and having a light-shielding coat with a broad low-gloss region while maintaining the physical properties, such as a light-blocking property, necessary for light-shielding coat. In this method for manufacturing a light-shielding material comprising a light-shielding coat formed on the substrate, a coating liquid is prepared containing at least a binder resin, black fine particles and a matting agent having a variation coefficient of 20 or larger. Next, this coating liquid is coated on the substrate and dried to form a light-blocking coat.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: August 2, 2016
    Assignee: KIMOTO CO., LTD.
    Inventor: Yasumaro Toshima
  • Patent number: 9383484
    Abstract: Provided is a light-shielding material for use in optical instrument and having a light-shielding sheet with broad low-gloss region while maintaining the physical properties necessary for a light-shielding sheet. The light-shielding material 1 comprises a light-shielding sheet 4 on a substrate 2, and the surface properties of the light-shielding sheet 4 are adjusted so as to fulfill at least one of A1 and A2, and at least one of B1 and B2. A1 is the condition that the arithmetic average roughness Sa in a three-dimensional surface roughness measurement is 0.4 or larger and 2.0 or smaller, A2 is that the ten-point average roughness Sz in a three-dimensional surface roughness measurement is 1 or larger and 20 or smaller.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: July 5, 2016
    Assignee: KIMOTO CO. LTD.
    Inventor: Yasumaro Toshima
  • Patent number: 9366800
    Abstract: This edge light-type backlight device comprises a light guide plate, a light source disposed at one end part of the light guide plate, a light diffusion sheet and a prism sheet on a light emission face of the light guide plate. The refractive index of the prism sheet exceeds 1.60, a peak of emitted light distribution of the light emission face in a plane parallel to the one end part of the light guide plate and orthogonal to the light emission face is within an angle ranges of 30°˜45° and ?30°˜?45° with respect to a normal direction of the light emission face. The emitted light of the light emission face diminishes toward an emission angle ?90° or 90° with respect to the normal line from the angle ranges of the peak of the emitted light distribution. High frontal brightness and diffusion are realized.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: June 14, 2016
    Assignee: KIMOTO CO., LTD.
    Inventors: Hiroshi Yokota, Masashi Takai
  • Patent number: 9349980
    Abstract: There is provided a scattering film that can be used in organic EL light emitting devices and that not only improves efficiency for light utilization and improves viewing angle dependency, which have conventionally been problems, but also can solve the problem of reflection when lights-off. This scattering film for organic EL is used in organic EL light emitting devices. The scattering film comprises a scattering layer that includes a binder resin and particles having a refractive index different from the binder resin. The average particle size of the particles is 10 ?m or less, and the coefficient of variation of the average particle size for the particles is 30% or greater.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: May 24, 2016
    Assignee: KIMOTO CO., LTD.
    Inventors: Masashi Takai, Toshiaki Ishibashi
  • Patent number: 9238703
    Abstract: A hard coat layer on which adhered fingerprints are inconspicuous is provided. The hard coat layer 1 consists of a cured product. The cured product is formed by curing a curable composition by irradiating it with an ultraviolet ray. The curable composition contains a curable resin. The curable resin contains reactive monomers. The reactive monomers contain an isocyanuric acid derivative. The isocyanuric acid derivative is preferably tri(meth)acrylate of an ethylene oxide and ?-caprolactone adduct of isocyanuric acid.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: January 19, 2016
    Assignee: KIMOTO CO., LTD.
    Inventors: Masato Saito, Yukio Kishi, Masuo Koyama
  • Publication number: 20150293435
    Abstract: Provided is a writable screen that has a reduced occurrence of glare while satisfying writing/erasing properties. The writable screen results from providing a resin layer that can be written/erased by a whiteboard pen on one surface of a base material, the resin layer having a surface arithmetic mean roughness based on JIS B0601:2001 of 0.1-3.0 ?m at a cutoff value of 0.8 mm and a stylus tip radius of 2.5 ?m, and a surface arithmetic mean roughness based on JIS B0601:2001 of 0.05-0.20 ?m at a cutoff value of 0.08 mm and a stylus tip radius of 2.5 ?m.
    Type: Application
    Filed: March 7, 2013
    Publication date: October 15, 2015
    Applicant: KIMOTO CO., LTD.
    Inventors: Syuuji KOHTA, Hironori SATO