Abstract: A magnetic recording medium includes a flexible and elongated substrate, a soft magnetic layer having an average thickness of 10 nm or more to 50 nm or less, and a recording layer. The soft magnetic layer is disposed between the substrate and the recording layer, and a difference in Young's modulus between the magnetic recording medium and the substrate in a longitudinal direction of the substrate is 2.4 GPa or more.

Abstract: A tape-like magnetic recording medium includes a reinforced substrate, and a recording layer arranged on the reinforced substrate, and the reinforced substrate includes a substrate that has a first face and a second face opposed to each other, and has an average thickness of 4 ?m or smaller, and a metal layer that contains cobalt, arranged on the first face, the reinforced substrate by itself causing thereon a depth of indentation of 0.25 ?m or shallower, when a 0.7-mm-diameter hard sphere is impressed against the second face under 5.0 gf load for 10 seconds.

Abstract: There is provided a magnetic recording medium including a base; a seed layer; a foundation layer; and a recording layer, the seed layer being disposed between the base and the foundation layer, having an amorphous state, including an alloy containing Ti, Cr and O, a percentage of Ti being 30 atomic % to 100 atomic % based on a total amount of Ti and Cr contained in the seed layer, and a percentage of O being 15 atomic % or less based on a total amount of Ti, Cr and O contained in the seed layer. Also, a production method thereof is provided.

Abstract: A tape-like magnetic recording medium includes a reinforced substrate, and a recording layer arranged on the reinforced substrate, and the reinforced substrate includes a substrate that has a first face and a second face opposed to each other, and has an average thickness of 4 ?m or smaller, and a metal layer that contains cobalt, arranged on the first face, the reinforced substrate by itself causing thereon a depth of indentation of 0.25 ?m or shallower, when a 0.7-mm-diameter hard sphere is impressed against the second face under 5.0 gf load for 10 seconds.

Abstract: An object is to suppress or prevent a dimensional change of a magnetic recording tape. The present technology provides a magnetic recording tape having a layer structure including a magnetic layer, a base layer, and a back layer in this order, in which a reinforcing layer containing a metal or a metal oxide is disposed on either a surface of the base layer on the magnetic layer side or a surface of the base layer on the back layer side, and a black area in an image obtained by binarizing an optical microscope image of a rectangular region of 64 ?m×48 ?m of the reinforcing layer is 300 ?m2 or less.

Abstract: To provide a magnetic recording tape that exhibits excellent tape dimension stability even if there are changes in temperature or humidity or even if tension is applied to the magnetic recording tape during tape travelling. The present technology provides a magnetic recording tape, the tape (T1 or T2) having a total thickness of 5.6 ?m or less and including a magnetic layer 1, a non-magnetic layer 2, a base layer 3, and a back layer 4 in the stated order. In one embodiment, a deposition film layer A formed of a metal or an oxide thereof is provided on a lower-layer side of the non-magnetic layer 2. The deposition film layer A may be provided on the back layer 4 and an insulation layer B may also be provided between the deposition film layer A the non-magnetic layer 2.

Abstract: A magnetic recording medium includes: a flexible and elongated substrate; a soft magnetic layer having an average thickness of 10 nm or more to 50 nm or less; and a recording layer, in which the soft magnetic layer is disposed between the substrate and the recording layer, and a difference in Young's modulus between the magnetic recording medium and the substrate in a longitudinal direction of the substrate is 2.4 GPa or more.

Abstract: Provided is a magnetic field generation apparatus including: two or more main magnetic pole portions configured to generate a main magnetic field; one or more secondary magnetic pole portions including a plurality of first divisional magnets obtained by a division, that generate a secondary magnetic field for adjusting the generated main magnetic field; and a yoke portion including one or more first yokes opposing the plurality of first divisional magnets in correspondence with the one or more secondary magnetic pole portions.

Abstract: Provided is a magnetic field generation apparatus including: two or more main magnetic pole portions configured to generate a main magnetic field; one or more secondary magnetic pole portions including a plurality of first divisional magnets obtained by a division, that generate a secondary magnetic field for adjusting the generated main magnetic field; and a yoke portion including one or more first yokes opposing the plurality of first divisional magnets in correspondence with the one or more secondary magnetic pole portions.

Abstract: There is provided a magnetic recording medium including a base; a seed layer; a foundation layer; and a recording layer, the seed layer being disposed between the base and the foundation layer, having an amorphous state, including an alloy containing Ti, Cr and O, a percentage of Ti being 30 atomic % to 100 atomic % based on a total amount of Ti and Cr contained in the seed layer, and a percentage of O being 15 atomic % or less based on a total amount of Ti, Cr and O contained in the seed layer. Also, a production method thereof is provided.

Abstract: A self-limiting reaction deposition apparatus includes a first guide roller, a second guide roller, and at least one first head. The first guide roller changes, while supporting a first surface of a base material conveyed by a roll-to-roll process, a conveying direction of the base material from a first direction to a second direction that is not parallel to the first direction. The second guide roller changes, while supporting the first surface of the base material, the conveying direction of the base material from the second direction to a third direction that is not parallel to the second direction. The at least one first head is disposed between the first guide roller and the second guide roller, faces a second surface opposite to the first surface of the base material, and discharges, towards the second surface, a raw material gas for self-limiting reaction deposition.

Abstract: A magnetic recording medium includes a nonmagnetic support having a thickness less than 7 ?m and a width of 8 mm; a ferromagnetic metal layer disposed on a surface of the nonmagnetic support; and a reinforcing layer disposed on the other surface of the nonmagnetic support. The magnetic recording medium has a flexural rigidity EI of 5.9×10?8 to 1.3×10?7 N·m (6.0×10?4 to 1.3×10?3 g·cm). The flexural rigidity EI is determined by the following equation: EI=(?/4?2/?)·W·a3/d·b×9.8×10?5 (wherein W is a load that causes an annular test piece having a radius of a cm and a width of b cm which is prepared by cutting a magnetic sheet formed of the magnetic recording medium to undergo a radial displacement d of 0.2?a).

Abstract: A method of manufacturing a metallic thin film type magnetic recording medium is provided. The method comprises the steps of arranging an initial substance of said recording medium in opposition to a plasma discharge electrode, said initial substance comprising a non-magnetic support base, a metallic layer capable of functioning as a metallic electrode formed on said non-magnetic support base and a metallic magnetic layer formed on said metallic layer, and forming a protection film on a surface of said initial substance of said recording medium by way of generating plasma discharge while feeding raw material gas between said metallic layer/said metallic magnetic layer and said plasma discharge electrode.

Abstract: A magnetic recording medium of a metal thin-film type, which includes a magnetic layer and a carbon protective layer on a non-magnetic support member, and in which a non-magnetic metal thin-film is provided between the magnetic layer and the carbon protective layer, is provided. The magnetic recording medium thus produced can be run stably.

Abstract: A method of manufacturing a metallic thin film type magnetic recording medium is provided. The method comprises the steps of arranging an initial substance of said recording medium in opposition to a plasma discharge electrode, said initial substance comprising a non-magnetic support base, a metallic layer capable of functioning as a metallic electrode formed on said non-magnetic support base and a metallic magnetic layer formed on said metallic layer, and forming a protection film on a surface of said initial substance of said recording medium by way of generating plasma discharge while feeding raw material gas between said metallic layer/said metallic magnetic layer and said plasma discharge electrode.

Abstract: A magnetic recording medium includes a nonmagnetic support having a thickness less than 7 ?m and a width of 8 mm; a ferromagnetic metal layer disposed on a surface of the nonmagnetic support; and a reinforcing layer disposed on the other surface of the nonmagnetic support. The magnetic recording medium has a flexural rigidity EI of 5.9×10?8 to 1.3×10?7 N·m (6.0×10?4 to 1.3×10?3 g·cm). The flexural rigidity EI is determined by the following equation: EI=(?/4?2/?)·W·a3/d·b×9.8×10?5 (wherein W is a load that causes an annular test piece having a radius of a cm and a width of b cm which is prepared by cutting a magnetic sheet formed of the magnetic recording medium to undergo a radial displacement d of 0.2?a).

Abstract: A method of manufacturing a metallic thin film type magnetic recording medium is provided. The method comprises the steps of arranging an initial substance of said recording medium in opposition to a plasma discharge electrode, said initial substance comprising a non-magnetic support base, a metallic layer capable of functioning as a metallic electrode formed on said non-magnetic support base and a metallic magnetic layer formed on said metallic layer, and forming a protection film on a surface of said initial substance of said recording medium by way of generating plasma discharge while feeding raw material gas between said metallic layer/said metallic magnetic layer and said plasma discharge electrode.

Abstract: There is provided a cleaning tape capable of attaining sufficient cleaning effects while preventing electrostatic discharge damage to magnetoresistive heads or changes in reproduced output due to excessive head wear. The cleaning tape includes a non-magnetic substrate 1, surface protrusions 6 formed on the non-magnetic substrate 1 with particles 2 having a particle diameter of 10 to 40 nm at a density of 300×104 to 5000×104 mm2, a metal evaporated film 3 (preferably an electrically conductive layer such as an alloy layer containing Co as a primary component, an Al layer or the like) having a thickness of 10 to 200 nm and an inorganic protection film 4 having a thickness of 3 to 50 nm formed on the metal evaporated film 3.

Abstract: A cleaning tape comprising a nonmagnetic base film, an evaporated metal layer, specifically a magnetic layer or electroconductive layer, formed on the nonmagnetic base film, an inorganic protective film formed on the evaporated metal layer, and surface projections formed on the nonmagnetic base film by particles having a predetermined diameter and density. The tape has a low electric resistivity, a low head abrasion, and a sufficient cleaning effect suitable for cleaning a magnetoresistive type head.

Abstract: A magnetic recording medium of a metal thin-film type, which includes a magnetic layer and a carbon protective layer on a non-magnetic support member, and in which a non-magnetic metal thin-film is provided between the magnetic layer and the carbon protective layer, is provided. The magnetic recording medium thus produced can be run stably.