Abstract: The present invention provides a multi-layered object having a hard coat layer capable of improving anti-staining property, anti-staining durability, scratch resistance, abrasion resistance and the like. A multi-layered object comprising a hard coat layer and a light transmitting layer, wherein the hard coat layer is formed from a composition for hard coat comprising: an active energy ray-curable silicone-acrylic copolymer (A); and an active energy ray-curable polyfunctional compound (B), and wherein the active energy ray-curable silicone-acrylic copolymer (A) contains: a polysiloxane block (a-1), an acrylic block (a-2) containing an active energy ray-curable double bond group and a fluoroalkyl group-containing acrylic block (a-3).

Abstract: The present invention provides a composition for hard coat capable of forming a hard coat layer having the improved anti-staining property, anti-staining durability, scratch resistance, abrasion resistance, antistatic property and the like. A composition for hard coat comprising: an active energy ray-curable silicone-acrylic copolymer (A); an active energy ray-curable polyfunctional compound (B); and an electrically conductive material (C), wherein the active energy ray-curable silicone-acrylic copolymer (A) contains: a polysiloxane block (a-1), an acrylic block (a-2) containing an active energy ray-curable double bond group, and a fluoroalkyl group-containing acrylic block (a-3).

Abstract: An active energy ray-curable resin composition comprises a compound (A) having an active energy ray-curable unsaturated bond in a molecule, an anti-staining property-imparting agent (B) which is a fluorine-containing polyether compound having a perfluoropolyether unit, a urethane bond and an active energy ray-curable unsaturated bond in a molecule, a compound (C) represented by the general formula (1): wherein R1, R2 and R3 may be either the same or different, and are respectively an organic group having at least one functional group selected from the group consisting of a vinyl group, an epoxy group, a (meth)acryloxy group, an amino group and a mercapto group, and n is an integer of 0 or more; and inorganic fine particles (D).

Abstract: An optical information medium includes a light-transmitting supporting substrate, an information recording layer on one surface of the supporting substrate, a protective layer on the information recording layer, and a light-transmitting hard coat layer on an other surface of the supporting substrate. The medium is configured to have a recording/reproducing beam incident into the information recording layer through the hard coat later and the supporting substrate.

Abstract: An optical reading system is provided to improve read signal quality with increasing its linear recording density. An optical recording medium in which the distance from a light incident surface to an information recording layer is less than 100 ?m is irradiated with a laser beam through an objective lens and information stored in the information recording layer is read by means of a PRML detection method. At this time, the constraint length n in the PRML detection method is set to an integer which satisfies 0.5×(?/NA)/(LV/f)?1<n<0.5×(?/NA) /(LV/f)+1, wherein ? represents the wavelength of the laser beam, NA represents the numerical aperture of the objective lens, LV represents the linear velocity of the optical recording medium when recording, and f represents a channel bit frequency when recording.

Abstract: A low-cost artificial fingerprint liquid for quantitatively and with a good reproducibility evaluating an anti-staining property, and a fingerprint adhering property or a fingerprint removing property on the surface of an optical disk such as a reproduction-only optical disk, optical recording disk, magneto-optical recording disk, various displays such as a CRT, and various substances such as glass including a fine-particle-form substance and a dispersion medium capable of dispersing the fine-particle-form substance.

Abstract: A testing method capable of quantifying abrasion resistance on the translucent base surface of a high-recording-density optical information medium simply and in a form of reflecting an actual application environment, and judging criteria appropriate for the testing method.

Abstract: The present invention provides inexpensively an article with a hard coat excellent in anti-staining property, lubricity, scratch resistance and abrasion resistance. The present invention provides a method for forming the hard coat. A hard coat agent composition comprising an active energy ray-curable compound is applied onto a surface of an article 1 to be hard-coat-treated, thereby forming a hard coat agent composition layer, a surface material layer is formed by film-forming with a surface layer material comprising an active energy ray-curable compound having anti-staining property and/or lubricating property on the surface of the hard coat agent composition layer, and active energy rays are irradiated onto the formed hard coat agent composition layer and surface material layer so as to cure the two layers simultaneously, thereby forming a hard coat layer 2 contacting the surface of the article 1 and an anti-staining surface layer 3 contacting the surface of the hard coat layer 2.

Abstract: The present invention provides inexpensively an article with a hard coat excellent in anti-staining property, lubricity, scratch resistance and abrasion resistance. The present invention also provides a method for forming the hard coat. A hard coat agent composition comprising an active energy ray-curable compound is applied onto a surface of an article (1) to be hard-coat-treated, thereby forming a hard coat agent composition layer, a surface material layer is formed by film-forming with a surface material comprising a fluorine-containing polyfunctional (meth)acrylate compound on the surface of the hard coat agent composition layer, and active energy rays are irradiated onto the formed hard coat agent composition layer and surface material layer so as to cure the both layers simultaneously, thereby forming a hard coat layer (2) contacting the surface of the article (1) and an anti-staining surface layer (3) contacting the surface of the hard coat layer (2).

Abstract: An electron beam irradiation apparatus includes a turn-transfer mechanism; a turn irradiation chamber; an electron beam irradiation section; a replacement room configured to bring a target into and out of the turn irradiation chamber; an outer irradiation target holding table configured to form a part of the replacement room, and including an X-ray shielding mechanism, an airtightness maintaining mechanism, a target holding mechanism; an inner irradiation target holding table configured to form a part of the replacement room, and including an X-ray shielding mechanism, an airtightness maintaining mechanism, and a target holding mechanism, the inner irradiation target holding table being supported by the turn-transfer mechanism; a turning mechanism configured to drive the turn-transfer mechanism; and an elevator mechanism configured to move the turn-transfer mechanism, which supports the inner irradiation target holding table, up and down.

Abstract: A simple method for evaluating an optical information medium by judging quantitatively and reproducibly the surface quality of the optical information medium by the use of an artificial fingerprint liquid as an evaluation dispersion liquid, is provided. An optical information medium having a remarkably excellent anti-staining property of the surface which is on the incident side of recording/reproducing beam is provided. A method for evaluating an optical information medium, comprising: adhering an artificial fingerprint liquid containing a fine-particle-form substance and a dispersion medium capable of dispersing the fine-particle-form substance onto the surface of the optical information medium which is on the incident side of a recording/reproducing beam; observing the state of the artificial fingerprint liquid droplets adhered to the surface; and judging the quality of the medium surface.

Abstract: An optical information medium includes a light-transmitting supporting substrate, an information recording layer on one surface of the supporting substrate, a protective layer on the information recording layer, and a light-transmitting hard coat layer on an other surface of the supporting substrate. The medium is configured to have a recording/reproducing beam incident into the information recording layer through the hard coat later and the supporting substrate.

Abstract: An object is to stick an artificial fingerprint liquid on a test sample in a constant condition. An artificial fingerprint stamping apparatus 1 operates such that as an arm 10 lowers, the self weight of a stamp unit 3 causes an artificial fingerprint transfer member 9 at the lower end of a stamp pin 6 attached to the arm 10 via a ball bush 11 to be pressed against an artificial fingerprint liquid transfer disk D1 for a predefined period of time, and thus an artificial fingerprint liquid is transferred onto the lower end surface of the artificial fingerprint transfer member 9. Then, after the artificial fingerprint transfer member 9 is positioned above a test disc D1, the arm 10 is lowered so that the self weight of the stamp unit 3 causes the artificial fingerprint transfer member 9 to be pressed against the test disc D1 for a predefined period of time.

Abstract: An electron beam irradiation apparatus includes a turn-transfer mechanism; a turn-transfer chamber; an electron beam irradiation section; a replacement room configured to bring a target into and out of the turn-transfer chamber; an outer irradiation target holding table configured to form a part of the replacement room, and including an X-ray shielding mechanism, an airtightness maintaining mechanism, and a target holding mechanism; an inner irradiation target holding table, configured to form a part of the replacement room, and including an X-ray shielding mechanism, an airtightness maintaining mechanism, and a target holding mechanism, the inner irradiation target holding table being supported by the turn-transfer mechanism; a turning mechanism configured to turn the turn-transfer mechanism and an elevator mechanism configured to move the turn-transfer mechanism up and down; and a rotation mechanism disposed at the electron beam irradiation section and configured to rotate the target.

Abstract: An optical recording medium is provided which includes a plurality of information layers having recording sensitivities close to each other and reflectivities close to each other, and a sufficient difference in reflectivity between a space portion and a recording mark, and provides a reduction in production costs. The optical recording medium includes a first and a second information layer. Recording marks thicker than a space portion are formed in the information layers. The recording layer of the first information layer which is placed far from an incident surface is thicker than the recording layer of the second information layer which is placed close to the incident surface. The total thickness of dielectric layers of the first information layer is smaller than the total thickness of dielectric layers of the second information layer. The first information layer is thinner than the second information layer.

Abstract: An optical recording medium with a high productivity is provided which can certainly record/reproduce data even when a blue or blue-violet laser beam is used as an irradiation light. An optical recording medium has a substrate and a recording layer. The recording layer includes a recording portion and a coating portion. The recording portion and the coating portion are all made substantially from Bi and O. The ratio of the number of O atoms to the total number of Bi atoms and O atoms of the coating portion is less than that of the recording portion. The ratio of the number of O atoms of the recording portion is in the range of from 62% to 77%. The ratio of the number of O atoms to the total number of Bi atoms and O atoms of the coating portion is in the range of from 60% to 70%.

Abstract: A hardcoat agent composition comprising a fluorine-containing polyether compound (A) having a perfluoropolyether unit, urethane bond and active energy ray reactive group and a curable compound (B) having equal to or more than 2 active energy ray polymerizing groups in the molecule. An optical information medium having a film substance composed of single or multiple layers containing at least the recording layer 4 or the reflecting layer on the supporting substrate 20, the optical information medium wherein at least either the surface of the supporting substrate 20 or that of the above-mentioned film substance is formed by the hardcoat layer 8 containing a curable substance of the above-mentioned hardcoat agent composition.

Abstract: The present invention provides inexpensively an article with a hard coat excellent in anti-staining property, lubricity, scratch resistance and abrasion resistance. The present invention also provides a method for forming the hard coat.

Abstract: A low-cost artificial fingerprint liquid for quantitatively and with a good reproducibility evaluating an anti-staining property, and a fingerprint adhering property or a fingerprint removing property on the surface of an optical disk such as a reproduction-only optical disk, optical recording disk, magneto-optical recording disk, various displays such as a CRT, and various substances such as glass. A stamp is used to transfer the artificial fingerprint solution to the surface to be tested. An artificial fingerprint liquid comprising a fine-particle-form substance and a dispersion medium capable of dispersing the fine-particle-form substance. The dispersion medium preferably has a surface tension ranging from 20 to 50 mN/m at 25° C., and preferably is selected from at least one of higher fatty acid, derivative of higher fatty acid, terpens, and derivatives of terpens. The fine-particle-form substance is at least one selected from inorganic fine particles and organic fine particles.

Abstract: The present invention provides inexpensively an article with a hard coat excellent in anti-staining property, lubricity, scratch resistance and abrasion resistance. The present invention also provides a method for forming the hard coat.