Abstract: Provided is an electrophotographic belt of an endless shape including a substrate, wherein the substrate contains a polyimide resin and carbon nanotubes, wherein a content of the carbon nanotubes in the substrate is 15 vol % or less with respect to a total volume of the polyimide resin, wherein the substrate has a tensile strength of 200 MPa or more in each of a peripheral direction thereof and a direction perpendicular to the peripheral direction, and wherein the substrate has a thermal conductivity of 0.9 W/(m·K) or more in a thickness direction thereof.

Abstract: An optical compensation layer-attached polarizing plate including a polarizing plate, an optical compensation layer and another optical compensation layer that are laminated in this order, wherein the optical compensation layer has the relation nx1>ny1=nz1, including a resin with a photoelastic coefficient absolute value of at most 2.0×10?11 m2/N, and has an in-plane retardation (nx1?ny1)d1 in the range of 200 nm to 300 nm, the optical compensation layer has the relation nx2>ny2>nz2, including a resin with a photoelastic coefficient absolute value of at most 2.0×10?11 m2/N, and has an in-plane retardation (nx2?ny2)d2 in the range of 90 nm to 160 nm, a slow axis of the optical compensation layer makes an angle of 10° to 30° with an absorption axis of the polarizing plate, and a slow axis of the optical compensation layer makes an angle of 75° to 95° with the absorption axis of the polarizing plate.

Abstract: A retardation film of the present invention comprises a stretched film of a polymer film containing a norbornene-based resin, wherein the stretched film satisfies the following equation (1) and the equation (2); 100 nm?(nx?ny)·d?350 nm,??(1) 0.1?(nx?nz)/(nx?ny)?0.9,??(2) where the refractive indices in the slow axis direction, the fast axis direction and the thickness direction of the film are nx, ny and nz, respectively, d(nm) is thickness of the film, and the slow axis direction is a direction that the refractive index in film plane is maximum. The retardation film is hard to cause a shift or an unevenness of a retardation value due to a stress.

Abstract: A retardation film of the present invention comprises a stretched film of a polymer film containing a norbornene-based resin, wherein the stretched film satisfies the following equation (1) and the equation (2); 100 nm?(nx?ny)·d?350 nm . . . (1), 0.1?(nx?nz)/(nx?ny)?0.9 . . . (2), where the refractive indices in the slow axis direction, the fast axis direction and the thickness direction of the film are nx, ny and nz, respectively, d(nm) is thickness of the film, and the slow axis direction is a direction that the refractive index in film plane is maximum. The retardation film is hard to cause a shift or an unevenness of a retardation value due to a stress.

Abstract: An optical compensation layer-attached polarizing plate of the invention comprises a polarizing plate, an optical compensation layer (1) and another optical compensation layer (2) that are laminated in this order, wherein the optical compensation layer (1) has the relation nx1>ny1=nz1, comprises a resin with a photoelastic coefficient absolute value of at most 2.0×10?11 m2/N, and has an in-plane retardation (nx1?ny1)d1 in the range of 200 nm to 300 nm, the optical compensation layer (2) has the relation nx2>ny2>nz2, comprises a resin with a photoelastic coefficient absolute value of at most 2.0×10?11 m2/N, and has an in-plane retardation (nx2?ny2)d2 in the range of 90 nm to 160 nm, a slow axis of the optical compensation layer (1) makes an angle of 10° to 30° with an absorption axis of the polarizing plate, and a slow axis of the optical compensation layer (2) makes an angle of 75° to 95° with the absorption axis of the polarizing plate.

Abstract: A retardation film of the present invention comprises a stretched film of a polymer film containing a norbornene-based resin, wherein the stretched film satisfies the following equation (1) and the equation (2); 100 nm?(nx?ny)·d?350 nm ??(1), 0.1?(nx?nz)/(nx?ny)?0.9 ??(2), where the refractive indices in the slow axis direction, the fast axis direction and the thickness direction of the film are nx, ny and nz, respectively, d(nm) is thickness of the film, and the slow axis direction is a direction that the refractive index in film plane is maximum. The retardation film is hard to cause a shift or an unevenness of a retardation value due to a stress.

Abstract: A retardation film of the present invention comprises a stretched film of a polymer film containing a norbornene-based resin, wherein the stretched film satisfies the following equation (1) and the equation (2); 100 nm?(nx?ny)·d?350 nm . . . (1), 0.1?(nx?nz)/(nx?ny)?0.9 . . . (2), where the refractive indices in the slow axis direction, the fast axis direction and the thickness direction of the film are nx, ny and nz, respectively, d(nm) is thickness of the film, and the slow axis direction is a direction that the refractive index in film plane is maximum. The retardation film is hard to cause a shift or an unevenness of a retardation value due to a stress.

Abstract: A retardation film of the present invention comprises a stretched film of a polymer film containing a norbornene-based resin, wherein the stretched film satisfies the following equation (1) and the equation (2); 100 nm?(nx?ny)·d?350 nm . . . (1), 0.1?(nx?nz)/(nx?ny)?0.9 . . . (2), where the refractive indices in the slow axis direction, the fast axis direction and the thickness direction of the film are nx, ny and nz, respectively, d(nm) is thickness of the film, and the slow axis direction is a direction that the refractive index in film plane is maximum. The retardation film is hard to cause a shift or an unevenness of a retardation value due to a stress.

Abstract: A retardation film of the present invention comprises a stretched film of a polymer film containing a norbornene-based resin, wherein the stretched film satisfies the following equation (1) and the equation (2); 100 nm?(nx?ny)·d?350 nm . . . (1),0.1?(nx?nz)/(nx?ny)?0.9 . . . (2), where the refractive indices in the slow axis direction, the fast axis direction and the thickness direction of the film are nx, ny and nz, respectively, d(nm) is thickness of the film, and the slow axis direction is a direction that the refractive index in film plane is maximum. The retardation film is hard to cause a shift or an unevenness of a retardation value due to a stress.

Abstract: An optical film constituted by a laminate of a polarizer and a reflective polarizing film through an acrylic-based pressure-sensitive adhesive agent, the polarizer having an anti-glare layer, wherein the optical film has a haze (H) in a range of from 5% to 30%. Preferably, a haze (H1) of the polarizer and a haze (H2) of the reflective polarizing film satisfy the relation H1>H2. Preferably, the haze (H) of the optical film satisfies the relation H/H1>0.5.

Abstract: An optical film in which a function of a brightness enhancement film is maintained and variations in brightness and chromaticity within a film plane are suppressed is provided. An optical film is a laminate of an absorptive dichroic polarizing plate and a brightness enhancement film. A maximum chromaticity difference ?xy(max) of in-plane transmitted light is 0.008 or smaller after the optical film is attached to a glass plate and allowed to stand at 70° C. for 120 hours. The brightness enhancement film includes a layer having a circularly polarized light separating function, and a quarter wavelength plate. The quarter wavelength plate is a film showing an in-plane retardation (?nd) satisfying ?nd(450 nm)/?nd(550 nm)<1.02 or a film containing a polymer having a photoelastic coefficient of 40×10?12 m2/N or smaller.

Abstract: A diffusing/polarizing member (1) is provided which comprises a laminate (1) of a reflective polarizer (12) which separates incident natural light into a reflected light comprising a polarized light and a transmitted light, and a diffusing layer (11), wherein the reflective polarizer and the diffusing layer, when viewed from a slantwise direction, have respective colors which are complementary. Also provided is a liquid crystal display having the diffusing/polarizing member. In this diffusing/polarizing member, the color of the reflective polarizer viewed from a slantwise direction is negated by the color of the diffusing layer, these colors being complementary, whereby the member as a whole can be reduced in coloration when viewed from a slantwise direction. Thus, a reflective, semi-transmitting, or another liquid crystal display reduced in display unevenness, e.g., coloration in viewing from a slantwise direction, can be provided.

Abstract: An optical film in which a function of a brightness enhancement film is maintained and variations in brightness and chromaticity within a film plane are suppressed is provided. An optical film is a laminate of an absorptive dichroic polarizing plate and a brightness enhancement film. A maximum chromaticity difference &Dgr;xy(max) of in-plane transmitted light is 0.008 or smaller after the optical film is attached to a glass plate and allowed to stand at 70° C. for 120 hours. The brightness enhancement film includes a layer having a circularly polarized light separating function, and a quarter wavelength plate. The quarter wavelength plate is a film showing an in-plane retardation (&Dgr;nd) satisfying &Dgr;nd(450 nm)/&Dgr;nd(550 nm)<1.02 or a film containing a polymer having a photoelastic coefficient of 40×10−12 m2/N or smaller.

Abstract: A method of producing a laminated optical film constituted by a laminate of a plurality of optical films different in area, the method including the steps of: laminating an optical film (B) having a plurality of rectangular holes parallel to one another, on at least one surface of an optical film (A) to thereby form a laminate; and cutting the laminate into a plurality of chips to thereby obtain laminated optical films.

Abstract: An optical film is disclosed that includes a polarizing plate having a protective layer on at least one side of a polarizer and a brightness-enhanced film laminated to the polarizing plate, such that when the optical film is cut into a 25 mm×150 mm strip-shape and the strip-shaped film is bent at the center of the film so that the both ends in the longitudinal direction of the optical film are allowed to approach each other from above and below and when the distance between the both ends becomes 50 mm, the force applied to the lower part of the film is 0.20 N or less. Advantageously, embodiments of the invention provide an optical film in which less foams enter when the optical film is attached to a liquid crystal cell. As a result, the working operability and yield may be improved. A liquid crystal display using such an optical film is also disclosed.

Abstract: An optical film constituted by a laminate of a polarizer and a reflective polarizing film through an acrylic-based pressure-sensitive adhesive agent, the polarizer having an anti-glare layer, wherein the optical film has a haze (H) in a range of from 5% to 30%. Preferably, a haze (H1) of the polarizer and a haze (H2) of the reflective polarizing film satisfy the relation H1>H2. Preferably, the haze (H) of the optical film satisfies the relation H/H1>0.5.

Abstract: A method of producing a laminated optical film constituted by a laminate of a plurality of optical films different in area, the method including the steps of: laminating an optical film (B) having a plurality of rectangular holes parallel to one another, on at least one surface of an optical film (A) to thereby form a laminate; and cutting the laminate into a plurality of chips to thereby obtain laminated optical films.

Abstract: A cable end structure in which the cable end device and an intermediate cushion are tightly engaged with each other by mating conical surfaces without an apprehension that they might be shifted relatively to each other. In this way, inflection of the cushion and interfacial contact pressure caused by such inflection can be minimized and the durability of the cushion can be effectively improved.