Abstract: Provided is an anti-glare film excellence in anti-glare properties and capable of suppressing sparkle. An anti-glare film including an anti-glare layer, the anti-glare film having an uneven surface, wherein a 60°-specular glossiness measured from the uneven surface side is 30.0 or less, and a coefficient of variation of brightness is 0.0400 or less. The anti-glare film has a 20°-specular glossiness measured from the uneven surface side of preferably 6.0 or less.

Abstract: Provided is an optical film which has high anti-glare properties, enables a suppress of a reduction in jet-black appearance by reflected scattered light, and has favorable scratch resistance. An optical film having a surface with depressions and projections, wherein the surface with depressions and projections has a peak material volume Vmp of 0.010 ml/m2 or more and 0.050 ml/m2 or less specified in ISO 25178-2:2012, and a minimum autocorrelation length Sal of 4.0 ?m or more and 12.0 ?m or less specified in ISO 25178-2:2012.

Abstract: Provided is an optical film which has high anti-glare properties and high scratch resistance and enables a suppression in reflected scattered light. An optical film having a surface with depressions and projections, wherein the surface with depressions and projections has a developed interfacial area ratio Sdr of 0.010 or more and 0.060 or less specified in ISO 25178-2:2012, and a minimum autocorrelation length Sal of 4.0 ?m or more and 12.0 ?m or less specified in ISO 25178-2:2012.

Abstract: An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has a profile of depressions and projections, the first surface has an arithmetic mean height Sa of 0.05 ?m or more specified in ISO 25178-2:2012, and the first surface satisfies the relation represented by the following Expression 1: Sw×Vmp?2.00 (Expression 1) wherein “Sw” represents a tilt angle (degrees) of 30 ?l pure water droplet flowing down on the first surface; and “Vmp” represents a value of a peak material volume (ml/m2) of the first surface specified in ISO 25178-2:2012.

Abstract: An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has a profile of depressions and projections, the first surface has an arithmetic mean height Sa of 0.05 ?m or more specified in ISO 25178-2:2012, and the first surface satisfies the relation represented by the following Expression 1: Sw×Vmp?2.00 (Expression 1) wherein “Sw” represents a tilt angle (degrees) of 30 ?l pure water droplet flowing down on the first surface; and “Vmp” represents a value of a peak material volume (ml/m2) of the first surface specified in ISO 25178-2:2012.

Abstract: Provided is an optical film which has high anti-glare properties, enables a suppress of a reduction in jet-black appearance by reflected scattered light, and has favorable scratch resistance. An optical film having a surface with depressions and projections, wherein the surface with depressions and projections has a peak material volume Vmp of 0.010 ml/m2 or more and 0.050 ml/m2 or less specified in ISO 25178-2:2012, and a minimum autocorrelation length Sal of 4.0 ?m or more and 12.0 ?m or less specified in ISO 25178-2:2012.

Abstract: Provided is an optical film which has high anti-glare properties and high scratch resistance and enables a suppression in reflected scattered light. An optical film having a surface with depressions and projections, wherein the surface with depressions and projections has a developed interfacial area ratio Sdr of 0.010 or more and 0.060 or less specified in ISO 25178-2:2012, and a minimum autocorrelation length Sa1 of 4.0 ?m or more and 12.0 ?m or less specified in ISO 25178-2:2012.

Abstract: Provided is an optical film which has high anti-glare properties, enables a suppress of a reduction in jet-black appearance by reflected scattered light, and has favorable scratch resistance. An optical film having a surface with depressions and projections, wherein the surface with depressions and projections has a reduced peak height Spk of 0.20 ?m or more and 1.00 ?m or less specified in ISO 25178-2:2012, and a minimum autocorrelation length Sal of 4.0 ?m or more and 12.0 ?m or less specified in ISO 25178.

Abstract: Provided is an anti-glare film excellent in anti-glare properties and scratch resistance and capable of suppressing reflected scattered light. An anti-glare film including an anti-glare layer, the anti-glare film having an uneven surface, wherein for an amplitude spectrum of elevation of the uneven surface, when a sum of amplitudes corresponding to spatial frequencies of 0.005 ?m?1, 0.010 ?m?1, and 0.015 ?m?1 is defined as AM1 and an amplitude at a spatial frequency of 0.300 ?m?1 is defined as AM2, AM1 is more than 0.4000 ?m and 1.0000 ?m or less, and AM2 is 0.0050 ?m or more and 0.0500 ?m or less.

Abstract: An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has a profile of depressions and projections, the first surface has an arithmetic mean height Sa of 0.05 ?m or more specified in ISO 25178-2:2012, and the first surface satisfies the relation represented by the following Expression 1: Sw×Vmp?2.00 (Expression 1) wherein “Sw” represents a tilt angle (degrees) of 30 ?l pure water droplet flowing down on the first surface; and “Vmp” represents a value of a peak material volume (ml/m2) of the first surface specified in ISO 25178-2:2012.

Abstract: An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has a profile of depressions and projections, the first surface has an arithmetic mean height Sa of 0.05 ?m or more specified in ISO 25178-2:2012, and the first surface satisfies the relation represented by the following Expression 1: Sw×Vmp?2.00 (Expression 1) wherein “Sw” represents a tilt angle (degrees) of 30 ?l pure water droplet flowing down on the first surface; and “Vmp” represents a value of a peak material volume (ml/m2) of the first surface specified in ISO 25178-2:2012.

Abstract: An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has a profile of depressions and projections, the first surface has an arithmetic mean height Sa of 0.05 ?m or more specified in ISO 25178-2:2012, and the first surface satisfies the relation represented by the following Expression 1: Sw×Vmp?2.00 (Expression 1) wherein “Sw” represents a tilt angle (degrees) of 30 ?l pure water droplet flowing down on the first surface; and “Vmp” represents a value of a peak material volume (ml/m2) of the first surface specified in ISO 25178-2:2012.

Abstract: Provided is an anti-glare film excellent in anti-glare properties and capable of suppressing reflected scattered light. The anti-glare film includes an anti-glare layer, the anti-glare film having an uneven surface, wherein for an amplitude spectrum of elevation of the uneven surface, when a sum of amplitudes corresponding to spatial frequencies of 0.005 ?m?1, 0.010 ?m?1, and 0.015 ?m?1 is defined as AM1 and an amplitude at a spatial frequency of 0.300 ?m?1 is defined as AM2, AM1 is 0.070 ?m or more and 0.400 ?m or less, AM2 is 0.0050 ?m or more, and AM2<AM1.

Abstract: Provided is an anti-glare film excellent in anti-glare properties and capable of suppressing reflected scattered light. An anti-glare film including an anti-glare layer, the anti-glare film having an uneven surface, wherein for amplitude spectrum of elevation of the uneven surface, when a sum of amplitudes corresponding to spatial frequencies of 0.005 ?m?1, 0.010 ?m?1, and 0.015 ?m?1 is defined as AM1 and an amplitude at a spatial frequency of 0.300 ?m?1 is defined as AM2, AM1 is 0.070 ?m or more and 0.400 ?m or less, AM2 is 0.0050 ?m or more, and AM2<AM1.

Abstract: Provided is an anti-glare film excellent in anti-glare properties and capable of suppressing reflected scattered light. An anti-glare film including an anti-glare layer, the anti-glare film having an uneven surface, wherein for amplitude spectrum of elevation of the uneven surface, when a sum of amplitudes corresponding to spatial frequencies of 0.005 ?m?1, 0.010 ?m?1, and 0.015 ?m?1 is defined as AM1 and an amplitude at a spatial frequency of 0.300 ?m?1 is defined as AM2, AM1 is 0.070 ?m or more and 0.400 ?m or less, AM2 is 0.0050 ?m or more, and AM2<AM1.

Abstract: Provided is a method for selecting a touch panel pen writing member that enhances the efficiency for product design and quality management of writing members. A method for selecting a touch panel pen writing member, in which a writing member satisfying the following requirement A1-1 is selected as the touch panel pen writing member: <Requirement A1-1> A touch panel pen is secured in a state of being in contact with the surface of the touch panel pen writing member at an angle of 60 degrees, then while a vertical load of 100 gf is kept applied to the touch panel pen and while the touch panel pen writing member is moved 40 mm in one direction at a speed of 14 mm/second, the kinetic friction force in the movement direction given to the touch panel pen is measured at intervals of 0.001 seconds, and an average of the kinetic friction forces obtained every 0.001 second is calculated.

Abstract: Provided is a method for selecting a touch panel pen writing member that enhances the efficiency for product design and quality management of writing members. A method for selecting a touch panel pen writing member, in which a writing member satisfying the following requirement A1-1 is selected as the touch panel pen writing member: <Requirement A1-1> A touch panel pen is secured in a state of being in contact with the surface of the touch panel pen writing member at an angle of 60 degrees, then while a vertical load of 100 gf is kept applied to the touch panel pen and while the touch panel pen writing member is moved 40 mm in one direction at a speed of 14 mm/second, the kinetic friction force in the movement direction given to the touch panel pen is measured at intervals of 0.001 seconds, and an average of the kinetic friction forces obtained every 0.001 second is calculated.

Abstract: It is intended to provide a method for selecting a writing sheet for a touch panel pen that can accurately select a writing sheet with which the generation of unpleasant sounds during writing is suppressed. According to the method for selecting a writing sheet for a touch panel pen, a sheet satisfying condition 1-1 and condition 1-2 described below is selected as a writing sheet for a touch panel pen. <condition 1-1> Sound generated when writing is performed under predetermined conditions using a touch panel pen on the surface of a writing sheet for a touch panel pen is recorded. The sound pressure (dB/Hz) is calculated for each 1 Hz from the recorded sound by means of fast Fourier transform. The values of the dB/Hz at frequencies from 1 Hz to 20,000 Hz are normalized to have a maximum value of 100 and a minimum value of 0, and the normalized values of dB/Hz are adopted as rated sound pressures P.

Abstract: In a laminated roll, a battery separator and a film are laminated and wound. The battery separator includes a porous layer containing a fluororesin on at least one surface of a polyolefin microporous membrane. The film includes an inorganic particle and a thermoplastic resin. An amount of linear oligomers derived from the thermoplastic resin on a surface of the film is 30 ?g/m2 or less.

Abstract: It is intended to provide a method for selecting a writing sheet for a touch panel pen that can accurately select a writing sheet with which the generation of unpleasant sounds during writing is suppressed. According to the method for selecting a writing sheet for a touch panel pen, a sheet satisfying condition 1-1 and condition 1-2 described below is selected as a writing sheet for a touch panel pen. <condition 1-1> Sound generated when writing is performed under predetermined conditions using a touch panel pen on the surface of a writing sheet for a touch panel pen is recorded. The sound pressure (dB/Hz) is calculated for each 1 Hz from the recorded sound by means of fast Fourier transform. The values of the dB/Hz at frequencies from 1 Hz to 20,000 Hz are normalized to have a maximum value of 100 and a minimum value of 0, and the normalized values of dB/Hz are adopted as rated sound pressures P.