Konica Corporation

Konica-minolta Holdings, Inc.

Konica Minolta Opto, Inc.

Konica Minolta Medical and Graphic, Inc.

Konica Minolta, Inc.

Konica Minolta & Medical Graphic, Inc.

Yasuo Taima

Tetsuya Suzuki

Shinichi Suzuki

Hiroto Ito

Hideki Takiguchi

Akihito Hisamitsu

Kunimasa Hiyama

Kenji Ohnuma

Toshiyuki Marui

Kazuhito Ihara

Kazuhiko Fujikura

Takeshi Ono

Yuichi Atarashi

Akihisa Nakajima

Takeo Arai

Noriyuki Kokeguchi

Kiyoshi Yamashita

Yoshihiro Haga

Disclosed is a novel light extraction sheet, which not only improves light extraction efficiency but suppresses color change with the angle of observation, an organic EL element employing this light extraction sheet, and an illumination device employing the element. The light extraction sheet is featured in that it comprises a transparent resin film and provided thereon, a light scatter layer containing a binder resin and light scattering particles with an average particle size of front 0.2 to 1.0 &#x3bc;m dispersed in the binder resin and a concavo-convex layer containing a binder resin and spherical particles with an average particle size of from 3 to 10 &#x3bc;m.

Light extraction sheet, organic electroluminescence element and illumination device

The near-infrared reflective film is a lamination unit including: a high refractive layer containing a first metal oxide particle and a first water-soluble polymer, a low refractive layer containing a second metal oxide particle and a second water-soluble polymer, and a mixed layer that is located between the high refractive layer and the low refractive layer and contains the first metal oxide particle, the second metal oxide particle, and a third water-soluble polymer. The refractive index of the low refractive layer is smaller than the refractive index of the high refractive layer by 0.1 or more. The first metal oxide particle and the second metal oxide particle are different metal oxides.

Near-infrared reflective film, method for producing same, and near-infrared reflector provided with near-infrared reflective film

The present invention provides a near-infrared reflective film and a near-infrared reflector, which can be used over large areas and are flexible, and have low haze and high visible light transmittance. The near-infrared reflective film comprises at least one unit composed of a high refractive index layer and low refractive index layer on a substrate, and is characterized in that the refractive index difference between an adjacent high refractive index layer and low refractive index layer is at least 0.1, and said high refractive index layer contains at least one type of compound (A) selected from: 1) a rutile-type titanium oxide having a volume-average particle diameter of not more than 100 nm; 2) a water-soluble polymer; and 3) the following group of compounds. Group of compounds: a carboxyl group-containing compound, hydroxamic acids, pyridine derivatives.

Near-infrared reflective film, method for manufacturing near-infrared reflective film, and near-infrared reflector

Disclosed are an organic electroluminescence element with significantly improved light extraction efficiency and improved film properties and an illumination device that uses said element. The organic electroluminescence element has a transparent electrode, an organic electroluminescence layer, and a cathode sequentially stacked on a transparent base material. The element is characterized in that the transparent base material is a transparent resin film, there is a hard coat layer on both sides, the respective refractive indices satisfy the expressions (1)-(4), and there is a function to scatter light to the light emission side with respect to the organic electroluminescence layer. Expression (1): &#x2212;0.2&#x2266;n(H1)&#x2212;n(A)&#x2266;0.2, Expression (2): &#x2212;0.1&#x2266;n(H1)&#x2212;n(B)&#x2266;0.1, Expression (3): &#x2212;0.1&#x2266;n(H2)&#x2212;n(B)&#x2266;0.1, Expression (4): &#x2212;0.1&#x2266;n(H1)&#x2212;n(H2)&#x2266;0.1. In the expressions, n(A) is the refractive index of the transparent electrode; n(H1) is the refractive index of the hard coat layer (on the transparent electrode side); n(H2) is the refractive index of the hard coat layer (on the side opposite the transparent electrode); and n(B) is the refractive index of the transparent resin film.

Organic electroluminescence element and illumination device using the same

A thermoplastic composite material comprising: (i) a thermoplastic resin comprising an organic polymer; and (ii) particles having an average diameter of 1-30 nm dispersed in the thermoplastic resin, wherein the particles contain two or more kinds of inorganic particles having different refractive indexes.

Thermoplastic composite material and optical element

The present invention relates to an optical element for an optical pickup device, wherein the optical element is produced by molding a resin material, in which inorganic particles having a diameter of not more than 30 nm are dispersed in a plastic resin, an optical pickup device using the optical element, and a producing method of the optical element.

Optical pickup apparatus, optical element for optical pickup apparatus and producing method of optical element

A silver salt photothermographic dry imaging material wherein said material has photographic speeds () and () determined based on the predetermined conditions and the photographic speed () is not more than 1/10 of the photographic speed (), and the coefficient of determination value Rof the linear regression line is 0.998-1.000, which is obtained from the predetermined density points having a* and b* arranged in two-dimensional coordinates in which a* is used as the abscicca and b* is used as the coordinate of the CIE 1976 (L*a*b*) color space, b* of the intersection point of the linear regression line with the ordinate is &#x2212;5-5, and gradient (a*/b*) is 0.7-2.5.

Silver salt photothermographic dry imaging material

A silver salt photothermographic dry imaging material wherein said material has photographic speeds (1) and (2) determined based on the predetermined conditions and the photographic speed (2) is not more than 1/10 of the photographic speed (1), and the coefficient of determination value Rof the linear regression line is 0.998&#x2013;1.000, which is obtained from the predetermined density points having a* and b* arranged in two-dimensional coordinates in which a* is used as the abscissa and b* is used as the coordinate of the CIE 1076 (L*a*b*) color space, b* of the intersection point of the linear regression line with the ordinate is &#x2212;5&#x2013;5, and gradient (a*/b*) is 0.7&#x2013;2.5.

A photo sensitive emulsion disclosed, comprising an organic silver salt, a photosensitive silver halide and a dispersing medium, wherein the organic silver salt is comprised of at least a first organic silver salt grains and a second organic silver salt grains which are different in average grain size from each other. A photothermographic material containing is also disclosed.

Photosensitive emulsion and photothermographic material by use thereof

A silver halide photographic emulsion, wherein silver halide grains are prepared by adding a compound capable of forming cross-linkage with gelatin to said silver halide grains in any of processes before the completion of chemical sensitization after the formation of the silver halide grains.

Silver halide photographic emulsion and silver halide photographic light-sensitive material

A method for preparing a silver halide emulsion comprising silver halide grains is disclosed, comprising: reacting a silver salt solution and a halide salt solution to perform silver halide grain nucleation, followed by silver halide grain growth to form the silver halide grains, wherein the silver halide grains are formed in the presence of an iodide ion releasing agent; and subjecting a reaction mixture solution to ultrafiltration during grain growth.

Silver halide emulsion, preparation method thereof and silver halide photographic light sensitive material

A silver halide photographic emulsion is provided, wherein the silver halide emulsion contains silver halide grains having an average iodide content of less than 3 mol %, the silver halide grains comprising monodispersed core/shell type silver halide grains containing internally high iodide, the core/shell grains having two parallel twin planes and a substantially roundish hexahedral or tetradecahedral form.

Growing community of inventors

Tokyo, Japan

Yasuo Taima