Abstract: It is an object of the present invention to provide a polarizing plate which has high productivity and can suppress water-induced unevenness, and a method for producing the same. A polarizing plate includes: a retardation film provided on one surface of a polarizer with an adhesive layer interposed therebetween; and a protective film provided on the other surface of the polarizer with an adhesive layer interposed therebetween. The retardation film contains a cellulose resin. After the polarizing plate is immersed in water at 23° C. for 24 hours in a state where the polarizing plate is bonded to a glass plate, and taken out from the water, the polarizing plate has a dimensional change rate of 0.1% or less after 1 minute under an atmosphere of a temperature of 23° C. and humidity of 55%.

Abstract: It is an object of the present invention to provide a polarizing plate which has high productivity and can suppress water-induced unevenness, and a method for producing the same. A polarizing plate includes: a retardation film provided on one surface of a polarizer with an adhesive layer interposed therebetween; and a protective film provided on the other surface of the polarizer with an adhesive layer interposed therebetween. The retardation film contains a cellulose resin. After the polarizing plate is immersed in water at 23° C. for 24 hours in a state where the polarizing plate is bonded to a glass plate, and taken out from the water, the polarizing plate has a dimensional change rate of 0.1% or less after 1 minute under an atmosphere of a temperature of 23° C. and humidity of 55%.

Abstract: It is an object of the present invention to provide a polarizing plate which can suppress display unevenness even when being incorporated into a liquid crystal display device, has neutral hue, and can maintain cross property even when a low water-vapor permeable protective film is used. It is another object of the present invention to provide a method for manufacturing the same. The polarizing plate includes: a polarizing film; an adhesive layer; and a protective film provided on at least one surface of the polarizing film with the adhesive layer interposed therebetween. A ratio (I285/I480) of absorbance I285 of the polarizing film at 285 nm to absorbance I480 thereof at 480 nm is 1.2 or less. The polarizing plate has a hue b value of 4 or less. The protective film has a water-vapor permeability of 100 g/m2·day or less.

Abstract: A polarizing film, comprising a polarizer; transparent protective films with a water-vapor permeability of 150 g/m2/24 hours or less provided on both sides of the polarizer; and adhesive layers each interposed between the polarizer and one of the transparent protective films, wherein the adhesive layers are formed by applying an active energy ray to an active energy ray-curable adhesive composition containing a radically polymerizable compound, and the transparent protective films are bonded to the polarizer with the adhesive layers.

Abstract: A polarizing plate includes: a polyvinyl alcohol-based polarizer; and transparent protective films provided on both surfaces of the polyvinyl alcohol-based polarizer with an adhesive layer interposed between each of the transparent protective films and the polyvinyl alcohol-based polarizer. A first transparent protective film contains a (meth)acrylic resin and an ultraviolet absorber, the (meth)acrylic resin having an unsaturated carboxylic acid alkyl ester unit and a glutarimide unit represented by the general formula (1), having an imidization ratio of 2.5 to 5.0% and an acid value of 0.10 to 0.50 mmol/g, and having an acrylic ester unit of less than 1% by weight. A second transparent protective film contains a cycloolefin-based resin. R1 and R2 each independently represent hydrogen or an alkyl group; and R3 represents an alkyl group, a cycloalkyl group, or an aryl group.

Abstract: The present invention provides a polarizing plate and an image display system capable of lowering the reflectivity and improving the visibility of a public display. The present invention relates to a polarizing plate which is disposed on a visual recognition side of an image display devise that emits circularly polarized light and which converts the circularly polarized light into linearly polarized light. The polarizing plate preferably has a first optical element and a first polarizer in this order from an incident side of the circularly polarized light. The polarizing plate preferably has a ?/4 plate disposed closer to the visual recognition side than the first polarizer.

Abstract: It is an object of the present invention to provide a polarizing plate which can suppress display unevenness and yellow discoloration even when being applied to a liquid crystal panel and prevent a change in oblique hue, and a liquid crystal display device including the polarizing plate. A polarizing plate includes: a polyvinyl alcohol-based polarizer; a transparent protective film provided on one surface of the polyvinyl alcohol-based polarizer with an adhesive layer interposed therebetween; and a retardation film provided on the other surface of the polarizer with an adhesive layer interposed therebetween. The transparent protective film contains a (meth)acrylic resin and an ultraviolet absorber. The retardation film contains a cellulose resin and has an in-plane retardation of 5 nm or less and a thickness-direction retardation of 10 nm or less.

Abstract: It is an object of the present invention to provide a polarizing plate which has high productivity and can suppress water-induced unevenness, and a method for producing the same. A polarizing plate includes: a retardation film provided on one surface of a polarizer with an adhesive layer interposed therebetween; and a protective film provided on the other surface of the polarizer with an adhesive layer interposed therebetween. The retardation film contains a cellulose resin. After the polarizing plate is immersed in water at 23° C. for 24 hours in a state where the polarizing plate is bonded to a glass plate, and taken out from the water, the polarizing plate has a dimensional change rate of 0.1% or less after 1 minute under an atmosphere of a temperature of 23° C. and humidity of 55%.

Abstract: A polarizing plate includes: a polyvinyl alcohol-based polarizer; and transparent protective films provided on both surfaces of the polyvinyl alcohol-based polarizer with an adhesive layer interposed between each of the transparent protective films and the polyvinyl alcohol-based polarizer. A first transparent protective film contains a (meth)acrylic resin and an ultraviolet absorber, the (meth)acrylic resin having an unsaturated carboxylic acid alkyl ester unit and a glutarimide unit represented by the general formula (1), having an imidization ratio of 2.5 to 5.0% and an acid value of 0.10 to 0.50 mmol/g, and having an acrylic ester unit of less than 1% by weight. A second transparent protective film contains a cycloolefin-based resin. R1 and R2 each independently represent hydrogen or an alkyl group; and R3 represents an alkyl group, a cycloalkyl group, or an aryl group.

Abstract: It is an object of the present invention to provide a polarizing plate which can suppress display unevenness even when being incorporated into a liquid crystal display device, has neutral hue, and can maintain cross property even when a low water-vapor permeable protective film is used. It is another object of the present invention to provide a method for manufacturing the same. The polarizing plate includes: a polarizing film; an adhesive layer; and a protective film provided on at least one surface of the polarizing film with the adhesive layer interposed therebetween. A ratio (I285/I480) of absorbance I285 of the polarizing film at 285 nm to absorbance I480 thereof at 480 nm is 1.2 or less. The polarizing plate has a hue b value of 4 or less. The protective film has a water-vapor permeability of 100 g/m2·day or less.

Abstract: A method for manufacturing a polarizing plate, the method comprising bonding a first transparent protective film and a second transparent protective film to both sides of a polarizer with an adhesive layer interposed between the polarizer and each of the first and second transparent protective films, wherein the first and second transparent protective films have different elasticities (elastic modulus×thickness (?m)), the three films are pressure-bonded by being simultaneously allowed to pass between a pair of rolls, a direction in which the polarizer is fed and allowed to pass between the pair of rolls is inclined toward the high-elasticity film. The polarizing plate obtained by the method can be suppressed the occurrence of bubbles between the polarizer and the transparent protective films.

Abstract: A polarizing film, comprising a polarizer; transparent protective films with a water-vapor permeability of 150 g/m2/24 hours or less provided on both sides of the polarizer; and adhesive layers each interposed between the polarizer and one of the transparent protective films, wherein the adhesive layers are formed by applying an active energy ray to an active energy ray-curable adhesive composition containing a radically polymerizable compound, and the transparent protective films are bonded to the polarizer with the adhesive layers.

Abstract: A method for manufacturing a polarizing plate, the method comprising bonding a first transparent protective film and a second transparent protective film to both sides of a polarizer with an adhesive layer interposed between the polarizer and each of the first and second transparent protective films, wherein the first and second transparent protective films have different elasticities (elastic modulus×thickness (?m)), the three films are pressure-bonded by being simultaneously allowed to pass between a pair of rolls, a direction in which the polarizer is fed and allowed to pass between the pair of rolls is inclined toward the high-elasticity film. The polarizing plate obtained by the method can be suppressed the occurrence of bubbles between the polarizer and the transparent protective films.

Abstract: Disclosed is a trimethine dimer compound represented by the following general formula (I) and optical recording medium containing such a compound in a recording layer. (I)(In the formula, symbols are as in the description. When both Xa2 and Xb2 are imino groups, one of Xa1, Xb1, Xa3 and Xb3 is necessarily a 1-alkyl-1-benzylmethylene group which may have a substituent, a 1,1-dibenzylmethylene group which may have a substituent or a cycloalkane-1,1-diyl group having 3 to 6 carbon atoms which may have a substituent.

Abstract: An optical recording medium having a recording layer which contains at least one compound selected from the group consisting of mono-, di-, and triazaporphyrin compounds optionally in the form of a metal complex; or an optical recording medium comprising a substrate and formed thereon at least a recording layer containing an organic dye as a main component, characterized in that the organic dye has a first maximum value of absorption at a wavelength ?1 of 400 nm or less in the absorption spectrum and has a second maximum value of absorption at a longer-wavelength side than the ?1, and a wavelength band wherein the refractive index (n) and the absorption coefficient (k) of the above organic dye satisfy n?1.90 and 0.03?k?0.30.

Abstract: An optical recording medium containing in the recording layer a dipyrromethene-metal chelate compound of which the initial principal weight loss temperature is thermogravimetrically from 330° C. through 500° C. inclusive, capable of high speed and high density recording and playback with a laser having a wavelength of 520 to 690 nm.

Abstract: An optical recording medium having a recording layer which contains at least one compound selected from the group consisting of mono-, di-, and triazaporphyrin compounds optionally in the form of a metal complex; or an optical recording medium comprising a substrate and formed thereon at least a recording layer containing an organic dye as a main component, characterized in that the organic dye has a first maximum value of absorption at a wavelength &lgr;1 of 400 nm or less in the absorption spectrum and has a second maximum value of absorption at a longer-wavelength side than the &lgr;1, and a wavelength band wherein the refractive index (n) and the absorption coefficient (k) of the above organic dye satisfy n≧1.90 and 0.03≦k≦0.30.

Abstract: In an optical recording medium, a recording layer is formed by coating a substrate with a solution of coloring matter comprising a coloring matter dissolved in a solvent comprising a mixture of cyclooctane and at least one hydrocarbon having 6 to 9 carbon atoms other than cyclooctane. The obtained optical recording medium enables suppressing the leakage of land prepit signal for address information into RF signal for recorded data at the time of recorded data reproduction, thereby attaining a lowering of error rate.