Patents by Inventor Shuntaro Ibuki

Shuntaro Ibuki 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: 20160216410
    Abstract: A reflection-preventing film having: a substrate; and a reflection-preventing layer having a concave-convex structure on a surface, in which the reflection-preventing layer includes particles for forming convex portions, and a binder resin, the particles for forming convex portions are not in contact with each other, and IVA which is a ratio of a distance A between peaks of adjacent convex portions and a distance B in a height direction from a center of the distance A to a concave portion is greater than 0.5.
    Type: Application
    Filed: April 4, 2016
    Publication date: July 28, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Miho ASAHI, Shuntaro IBUKI, Takayasu YAMAZAKI
  • Publication number: 20160091635
    Abstract: There is provided an antireflection film including an unevenness structure having an average cycle shorter than a visible light wavelength on a transparent substrate film, wherein in the unevenness structure, an average aspect ratio of an average height of convex portions or an average depth of concave portions to an average cycle is from 1.0 to 3.0, a water contact angle to an unevenness structure surface is 100° or more, and a specular reflectance is 2.0% or less.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 31, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Shuntaro IBUKI, Yutaka ADEGAWA
  • Publication number: 20160077240
    Abstract: The invention is to provide a antireflective film having a moth-eye structure, which has sufficient antireflective performances, which exhibits excellent planar uniformity, and which can be manufactured by a simple method; a polarizing plate, a cover glass, and an image display device that have the antireflective film; a method for producing the antireflective film; a cloth for cleaning the antireflective film; a kit including the antireflective film and the cleaning cloth; and a method for cleaning the antireflective film. The invention provides a antireflective film which includes a plastic substrate; a infiltration layer; a antireflective layer including a binder resin and particles with an average primary particle diameter of 50 nm to 700 nm, in this order in an adjacent manner, in which the antireflective layer has moth-eye structures formed by the particles on the surface opposite to the infiltration layer.
    Type: Application
    Filed: November 13, 2015
    Publication date: March 17, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Miho ASAHI, Takayasu YAMAZAKI, Kenichi FUKUDA, Shuntaro IBUKI
  • Publication number: 20160077239
    Abstract: There is provided an antireflective film, including: a plastic substrate; a infiltration layer; and an antireflective layer containing metallic oxide fine particles with an average primary particle diameter of 50 nm to 250 nm and a viscosity increasing compound, in this order, wherein the infiltration layer contains a polymer of a (meth)acrylate compound having a molecular weight of 400 or less, and the antireflective layer has a moth-eye structure including an uneven shape formed by the metallic oxide fine particles.
    Type: Application
    Filed: September 11, 2015
    Publication date: March 17, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Miho ASAHI, Kazuo KAMOHARA, Shuntaro IBUKI, Ayako MATSUMOTO, Daiki WAKIZAKA
  • Publication number: 20150276991
    Abstract: There is provided an antireflective article including a chemically reinforced glass substrate with a surface compressive stress of 30 kg/mm2 or more and an antireflection layer containing a specific binder resin, specific metal oxide particles, and a specific metal chelate catalyst, above the chemically reinforced glass substrate, wherein the antireflection layer has a moth-eye structure in an unevenness shape constituted by the metal oxide particles on a surface at a side opposite to a side at which the chemically reinforced glass substrate is provided.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 1, 2015
    Applicant: FUJIFILM Corporation
    Inventors: Makoto UCHIMURA, Shuntaro IBUKI, Miho ASAHI
  • Publication number: 20150253466
    Abstract: There is provided an antireflection film having a surface haze of less than 1.0%, including: a light transmitting layer; and an antireflection layer, wherein the antireflection layer includes a specific unevenness structure on a surface at a side opposite to a side at which the light transmitting layer is provided, the specific unevenness structure made from specific raw materials.
    Type: Application
    Filed: March 6, 2015
    Publication date: September 10, 2015
    Applicant: FUJIFILM CORPORATION
    Inventors: Shuntaro IBUKI, Nobuyuki AKUTAGAWA, Miho ASAHI
  • Patent number: 9042016
    Abstract: An optical film has a cellulose acylate film base material containing cellulose acylate and a plurality of sugar ester compounds having different ester substitution degrees in which an average ester substitution degree of the plurality of sugar ester compounds is from 60 to 94%, and an antistatic hardcoat layer formed from a coating composition containing at least an organic antistatic agent and a curable compound having a (meth)acryloyl group in a molecule of the curable compound.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: May 26, 2015
    Assignee: FUJIFILM CORPORATION
    Inventors: Takayasu Yamazaki, Shuntaro Ibuki, Kazuo Kamohara
  • Patent number: 8999436
    Abstract: Provided are an optical functional film including at least one functional layer, where the functional layer comprises a copolymer having a polymerization unit derived from a fluoroaliphatic group-containing monomer in a content of 10 weight % or more and the fluoroaliphatic group-containing copolymer is localized on the surface of the functional layer; an optical functional film obtained by coating an upper layer on the functional layer; an antireflection film, where the upper layer is a low refractive index layer; a polarizing plate using such a film for one of two protective sheets of a polarizer; and an image display device using the above-described optical functional film, antireflection film or polarizing plate for the outermost surface of the display.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: April 7, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Shuntaro Ibuki
  • Patent number: 8705174
    Abstract: An antiglare film is provided, the antiglare film including a transparent plastic film substrate; an antiglare layer having fine recesses and projections on the surface thereof; and an abrasion resistant layer provided at an uppermost surface of the antiglare film, the abrasion resistant layer having an average film thickness of from 0.03 to 0.4 ?m, wherein the abrasion resistant layer is formed from a curable composition containing at least following components (A), (B), and (C): (A) an inorganic fine particle containing silicon oxide as a main component and having an average particle size of from 1 to 300 nm; (B) an ionizing radiation-curable resin; and (C) a polymer thickener.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: April 22, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Shuntaro Ibuki, Kenichi Fukuda, Hiroyuki Yoneyama, Tokuju Oikawa
  • Publication number: 20130094082
    Abstract: An optical film has a cellulose acylate film base material containing a plurality of sugar ester compounds having different ester substitution degrees in which an average ester substitution degree of the plurality of sugar ester compounds is form 60 to 94% and cellulose acylate, and an antistatic hardcoat layer formed from a coating composition containing at least an organic antistatic agent and a curable compound having a (meth)acryloyl group in a molecule of the curable compound.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 18, 2013
    Applicant: FUJIFILM CORPORATION
    Inventors: Takayasu YAMAZAKI, Shuntaro IBUKI, Kazuo KAMOHARA
  • Patent number: 8318301
    Abstract: Provided is an antireflection film including, in the following order: a transparent support; at least one antiglare layer or diffusive layer containing a transparent resin and light-transmissive resin particles; and a low-refractivity layer having a refractive index lower than that of any of the transparent support and the antiglare layer or diffusive layer, wherein the transparent resin is formed by curing a mixture containing (A) a polyfunctional (meth)acrylate having at least two (meth)acryloyl groups, and (B) a modified polyfunctional (meth)acrylate modified through addition of any of ethylene oxide, propylene oxide or caprolactone, and the light-transmissive resin particles contain (C) high-crosslinking light-transmissive particles which are so high-crosslinking as to have a residual monomer content of at most 2.0% and which have a compression strength of from 39 to 98 N/mm2.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: November 27, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Shuntaro Ibuki, Tetsuya Asakura, Katsumi Inoue
  • Publication number: 20120107518
    Abstract: A Method for producing an antireflection film comprising a transparent support, at least one hard coat layer, and a low refractive index layer, the method including: coating a coating composition for forming the hard coat layer on or above the transparent support and curing the coating composition for forming the hard coat layer upon irradiation with light in an atmosphere at an oxygen concentration of 1% or less to form the hard coat layer; and coating a coating composition for forming the low refractive index layer on or above the hard coat layer and curing the coating composition for forming the low refractive index layer upon irradiation with light in an atmosphere at an oxygen concentration of 1% or less to form the low refractive index layer.
    Type: Application
    Filed: September 23, 2011
    Publication date: May 3, 2012
    Applicant: FujiFilm Corporation
    Inventors: Naohiro Matsunaga, Shuntaro Ibuki
  • Publication number: 20100027116
    Abstract: An antiglare film is provided, the antiglare film including a transparent plastic film substrate; an antiglare layer having fine recesses and projections on the surface thereof; and an abrasion resistant layer provided at an uppermost surface of the antiglare film, the abrasion resistant layer having an average film thickness of from 0.03 to 0.4 ?m, wherein the abrasion resistant layer is formed from a curable composition containing at least following components (A), (B), and (C): (A) an inorganic fine particle containing silicon oxide as a main component and having an average particle size of from 1 to 300 nm; (B) an ionizing radiation-curable resin; and (C) a polymer thickener.
    Type: Application
    Filed: July 30, 2009
    Publication date: February 4, 2010
    Inventors: Shuntaro IBUKI, Kenichi Fukuda, Hiroyuki Yoneyama, Tokuju Oikawa
  • Patent number: 7622194
    Abstract: An optical film comprises: a transparent support; and at least one functional layer provided the transparent support, wherein an unevenness in thickness of the transparent support is not greater than ±5% from an average thickness, and an unevenness in an amount of surface plasticizer on the transparent support on the functional layer side thereof is not greater than ±20% from an average residual amount of surface plasticizer.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: November 24, 2009
    Assignee: Fujifilm Corporation
    Inventor: Shuntaro Ibuki
  • Publication number: 20090246490
    Abstract: Provided is an antireflection film including, in the following order: a transparent support; at least one antiglare layer or diffusive layer containing a transparent resin and light-transmissive resin particles; and a low-refractivity layer having a refractive index lower than that of any of the transparent support and the antiglare layer or diffusive layer, wherein the transparent resin is formed by curing a mixture containing (A) a polyfunctional (meth)acrylate having at least two (meth)acryloyl groups, and (B) a modified polyfunctional (meth)acrylate modified through addition of any of ethylene oxide, propylene oxide or caprolactone, and the light-transmissive resin particles contain (C) high-crosslinking light-transmissive particles which are so high-crosslinking as to have a residual monomer content of at most 2.0% and which have a compression strength of from 39 to 98 N/mm2.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 1, 2009
    Applicant: FUJIFILM Corporation
    Inventors: Shuntaro Ibuki, Tetsyua Asakura, Katsumi Inoue
  • Patent number: 7572516
    Abstract: An antireflection film comprising: a transparent support; at least one functional layer; and a low-refractive layer, wherein at least one of said at least one functional layer comprises a hydrolyzate and/or a partial condensate of an organosilane compound represented by formula (1), and the antireflection film has an inner haze of from 1 to 50%: where R1 represents a hydrogen atom, a methyl group, a methoxy group, an alkoxycarbonyl group, a cyano group, a fluorine atom, or a chlorine atom; Y represents a single bond, *—COO—**, *—CONH—**, or *—O—**; L represents a divalent linking group; R2 to R4 each independently represents a halogen atom, a hydroxyl group, an unsubstituted alkoxy group, or an unsubstituted alkyl group; R5 represents a hydrogen atom or an unsubstituted alkyl group; R6 represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; and l indicates a number that satisfies a numerical formula of l=100?m, and m indicates a number of from 0 to 50.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: August 11, 2009
    Assignee: Fujifilm Corporation
    Inventors: Shuntaro Ibuki, Masataka Yoshizawa
  • Publication number: 20080182038
    Abstract: The present invention can provide an antireflection film improved in the scratch resistance while having a sufficiently high antireflection property, and a polarizing plate and a display device using the antireflection film, the antireflection filmantireflection film comprising: a transparent support; and as an outermost layer, a low refractive index layer containing a fluorine-containing polymer, wherein the low refractive index layer comprises at least one inorganic fine particle having an average particle size of 30 to 100% of the thickness of the low refractive index layer; the polarizing plate using the antireflection film for one of two protective films of a polarizer in the polarizing plate; and the image display device using the antireflection film or polarizing plate for the outermost surface of the display.
    Type: Application
    Filed: January 29, 2008
    Publication date: July 31, 2008
    Applicant: FujiFilm Corporation
    Inventors: Naohiro Matsunaga, Shuntaro Ibuki
  • Patent number: 7371439
    Abstract: The present invention can provide an antireflection film improved in the scratch resistance while having a sufficiently high antireflection property, and a polarizing plate and a display device using the antireflection film, the antireflection film antireflection film comprising: a transparent support; and as an outermost layer, a low refractive index layer containing a fluorine-containing polymer, wherein the low refractive index layer comprises at least one inorganic fine particle having an average particle size of 30 to 100% of the thickness of the low refractive index layer; the polarizing plate using the antireflection film for one of two protective films of a polarizer in the polarizing plate; and the image display device using the antireflection film or polarizing plate for the outermost surface of the display.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: May 13, 2008
    Assignee: Fujifilm Corporation
    Inventors: Naohiro Matsunaga, Shuntaro Ibuki
  • Publication number: 20070035839
    Abstract: Provided are an optical functional film including at least one functional layer, where the functional layer comprises a copolymer having a polymerization unit derived from a fluoroaliphatic group-containing monomer in a content of 10 weight % or more and the fluoroaliphatic group-containing copolymer is localized on the surface of the functional layer; an optical functional film obtained by coating an upper layer on the functional layer; an antireflection film, where the upper layer is a low refractive index layer; a polarizing plate using such a film for one of two protective sheets of a polarizer; and an image display device using the above-described optical functional film, antireflection film or polarizing plate for the outermost surface of the display.
    Type: Application
    Filed: September 13, 2004
    Publication date: February 15, 2007
    Applicant: Fuji Photo Film Co., Ltd.
    Inventor: Shuntaro Ibuki
  • Patent number: 7138185
    Abstract: An anti-reflection film that is an optical film, at least has a hard coat layer, and a low-refractive-index layer containing a binder polymer, on a transparent support, wherein said hard coat layer and/or said low-refractive-index layer contains: (a) a hydrolysate of an organosilane in which a hydroxyl group or a hydrolysable group is directly bonded to silicon, and/or a partial condensation product thereof; and (b) at least one metal chelate compound of an alkylalcohol, and a compound of R4COCH2COR5, in which R4 is an alkyl group, and R5 is an alkyl or alkoxy group, as ligands, and a metal selected from Zr, Ti and Al, as a central metal.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: November 21, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuhiko Obayashi, Takahiro Ishizuka, Shuntaro Ibuki, Yuuzou Muramatsu