Patents Assigned to Kimoto Co., Ltd.
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Patent number: 11780987Abstract: 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: GrantFiled: May 17, 2016Date of Patent: October 10, 2023Assignee: KIMOTO CO., LTD.Inventor: Tsuyoshi Nagahama
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Publication number: 20220299682Abstract: 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: ApplicationFiled: September 23, 2020Publication date: September 22, 2022Applicant: KIMOTO CO., LTD.Inventors: Sho SUZUKI, Tatsuya KATO, Kazutoshi TACHIBANA
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Publication number: 20220169810Abstract: 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: ApplicationFiled: March 9, 2020Publication date: June 2, 2022Applicant: KIMOTO CO., LTD.Inventors: Sho SUZUKI, Tatsuya KATO, Kazutoshi TACHIBANA
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Publication number: 20220171104Abstract: 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: ApplicationFiled: March 6, 2020Publication date: June 2, 2022Applicant: KIMOTO CO., LTD.Inventors: Kazuhiro NOZAWA, Tsuyoshi NAGAHAMA, Shuzo TOMIZAWA
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Publication number: 20220163696Abstract: 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: ApplicationFiled: March 9, 2020Publication date: May 26, 2022Applicant: KIMOTO CO., LTD.Inventors: Kazutoshi TACHIBANA, Sho SUZUKI, Tatsuya KATO
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Patent number: 11256006Abstract: 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: GrantFiled: March 7, 2018Date of Patent: February 22, 2022Assignee: KIMOTO CO, LTD.Inventor: Tsuyoshi Nagahama
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Publication number: 20210124267Abstract: 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: ApplicationFiled: May 9, 2019Publication date: April 29, 2021Applicants: Showa Denko Materials Co., Ltd., KIMOTO CO., LTD.Inventors: Hideki ETORI, Keiko KITAMURA, Yoshiaki FUSE, Nobuhito KOMURO
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Patent number: 10975253Abstract: 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: GrantFiled: May 17, 2016Date of Patent: April 13, 2021Assignee: KIMOTO CO., LTD.Inventor: Tsuyoshi Nagahama
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Patent number: 10634825Abstract: 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: GrantFiled: May 19, 2015Date of Patent: April 28, 2020Assignee: KIMOTO CO., LTD.Inventors: Tsuyoshi Nagahama, Yasumaro Toshima
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Publication number: 20180134862Abstract: 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: ApplicationFiled: May 17, 2016Publication date: May 17, 2018Applicant: KIMOTO CO., LTD.Inventor: Tsuyoshi NAGAHAMA
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Publication number: 20180118959Abstract: 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: ApplicationFiled: May 17, 2016Publication date: May 3, 2018Applicant: KIMOTO CO., LTD.Inventor: Tsuyoshi NAGAHAMA
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Patent number: 9692412Abstract: 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: GrantFiled: February 25, 2013Date of Patent: June 27, 2017Assignee: KIMOTO CO., LTD.Inventors: Yutaka Shibata, Hikaru Nishinaga
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Publication number: 20170146701Abstract: 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: ApplicationFiled: May 19, 2015Publication date: May 25, 2017Applicant: KIMOTO CO., LTD.Inventors: Tsuyoshi NAGAHAMA, Yasumaro TOSHIMA
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Patent number: 9519085Abstract: A light diffusing sheet can include a diffusion layer. The diffusion layer has a surface profile that satisfies certain conditions.Type: GrantFiled: December 16, 2010Date of Patent: December 13, 2016Assignee: KIMOTO CO., LTD.Inventors: Hiroshi Yokota, Shingo Ohsaku
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Patent number: 9405042Abstract: 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: GrantFiled: February 29, 2012Date of Patent: August 2, 2016Assignee: KIMOTO CO., LTD.Inventor: Yasumaro Toshima
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Patent number: 9383484Abstract: 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: GrantFiled: February 29, 2012Date of Patent: July 5, 2016Assignee: KIMOTO CO. LTD.Inventor: Yasumaro Toshima
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Patent number: 9366800Abstract: 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: GrantFiled: March 26, 2013Date of Patent: June 14, 2016Assignee: KIMOTO CO., LTD.Inventors: Hiroshi Yokota, Masashi Takai
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Patent number: 9349980Abstract: 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: GrantFiled: July 31, 2012Date of Patent: May 24, 2016Assignee: KIMOTO CO., LTD.Inventors: Masashi Takai, Toshiaki Ishibashi
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Patent number: 9238703Abstract: 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: GrantFiled: December 2, 2008Date of Patent: January 19, 2016Assignee: KIMOTO CO., LTD.Inventors: Masato Saito, Yukio Kishi, Masuo Koyama
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Publication number: 20150293435Abstract: 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: ApplicationFiled: March 7, 2013Publication date: October 15, 2015Applicant: KIMOTO CO., LTD.Inventors: Syuuji KOHTA, Hironori SATO