Abstract: A magnetic recording medium includes a tape-shaped nonmagnetic support, and a vertical magnetic layer formed on a main surface of the nonmagnetic support by a vacuum thin-film forming technique, signals being recorded on and reproduced from the vertical magnetic layer in a linear system. In the magnetic recording medium, the dipulse ratio of the vertical recording layer is 0.36 or more.

Abstract: A transparent conductive film includes: a first conductor layer formed of a first transparent conducting oxide having a first specific resistance; and a second conductor layer that is laminated on the first conductor layer, has a second specific resistance that is equal to or larger than the first specific resistance and equal to or smaller than 1*106 ?*cm, and is formed of a second transparent conducting oxide including titanium.

Abstract: The present invention provides a film forming apparatus and a film forming method realizing improvement in the degree of freedom in film formation while suppressing production cost. While conveying a base material by using a plurality of guide rolls, film formation is performed by atomic layer deposition by outputting precursor gases to the base material by a plurality of ALD heads. The ALD heads are disposed so as to individually face the guide rolls so that the precursor gases are locally output to the base material. The amount of the precursor gases used is reduced more than that in a related art, and the variety of kinds of the usable precursor gases is widened.

Abstract: A magnetic recording medium includes a tape-shaped nonmagnetic support, and a vertical magnetic layer formed on a main surface of the nonmagnetic support by a vacuum thin-film forming technique, signals being recorded on and reproduced from the vertical magnetic layer in a linear system. In the magnetic recording medium, the dipulse ratio of the vertical recording layer is 0.36 or more.

Abstract: The present invention provides a lubricant capable of holding an excellent lubricating property under various types of service conditions, maintaining a lubricating effect for a long period of time and providing excellent traveling property, abrasion resistance, durability and the like, a recording medium using the lubricant and a carboxylic acid type compound constituting the lubricant.

Abstract: The present invention provides a lubricant capable of holding an excellent lubricating property under various types of service conditions, maintaining a lubricating effect for a long period of time and providing excellent traveling property, abrasion resistance, durability and the like, a recording medium using the lubricant and a carboxylic acid type compound constituting the lubricant.

Abstract: There is provided a magnetic recording medium which exhibits superior lubricating properties and superior tape-transport properties as well as superior robustness even in a low-temperature environment. A magnetic layer containing a ferromagnetic metal is formed on a nonmagnetic support, and a protecting film is formed on the magnetic layer. A lubricant auxiliary coating composition comprising an aromatic alcohol is applied to the protecting film to form a lubricant auxiliary layer, and a lubricant coating composition comprising a compound represented by the formula (1) below is applied to the lubricant auxiliary layer to form a lubricant layer. R1CH(COOR2)CH2COOR3??(1) wherein R1 represents an aliphatic alkyl group, an aliphatic alkenyl group, or a hydrogen atom, and each of R2 and R3 independently represents a fluoroalkyl group, a fluoroalkenyl group, a fluoropolyether group, or a hydrogen atom.

Abstract: Fine projections on a magnetic layer surface are controlled so as to reduce a media noise and improve C/Nmedia characteristic. A magnetic recording medium allows reproduction through a MR head or a GMR head. The magnetic layer on a main surface of a non-magnetic base has a coercive force of 80 KA/m or more and 180 KA/m or less. Assuming that a height of the fine projections is h and a diameter of the fine projections at a half-height h/2 is &phgr;h/2, 99% of the fine projections having a height not less than 10 nm satisfy a relationship as expressed by 100 nm≧&phgr;h/2≧40 nm.

Abstract: In the metallic thin film magnetic recording medium having the magnetic layer formed on a main face of a nonmagnetic supporting body according to vacuum thin film formation technology, the thickness of the nonmagnetic supporting body is 5 &mgr;m or less, the thickness of the magnetic layer is 20 nm-100 nm and a lining layer 20 nm-200 am in thickness is formed of metal, non-metal or alloy of these materials or oxide compound thereof according to vacuum thin film formation technology. Light transmittance is 5% or less and permeating water vapor amount is 5 g/m2·day or less. The lining layer and the back layer are formed successively on a main face opposite to the magnetic layer formation face. The relative roughness factor (Ra) of the topmost surface of the lining layer formation face is 2-15 nm.

Abstract: There is provided a magnetic recording medium which exhibits superior lubricating properties and superior tape-transport properties as well as superior robustness even in a low-temperature environment. A magnetic layer containing a ferromagnetic metal is formed on a nonmagnetic support, and a protecting film is formed on the magnetic layer. A lubricant auxiliary coating composition comprising an aromatic alcohol is applied to the protecting film to form a lubricant auxiliary layer, and a lubricant coating composition comprising a compound represented by the formula (1) below is applied to the lubricant auxiliary layer to form a lubricant layer.

Abstract: Fine projections on a magnetic layer surface are controlled so as to reduce a media noise and improve C/Nmedia characteristic. A magnetic recording medium allows reproduction through a MR head or a GMR head. The magnetic layer on a main surface of a non-magnetic base has a coercive force of 80 KA/m or more and 180 KA/m or less. Assuming that a height of the fine projections is h and a diameter of the fine projections at a half-height h/2 is &phgr;h/2, 99% of the fine projections having a height not less than 10 nm satisfy a relationship as expressed by 100 nm≧&phgr;h/2≧40 nm.

Abstract: A metallic thin film magnetic recording medium having a magnetic layer formed on a main face of a nonmagnetic supporting body according to vacuum thin film formation technology, wherein the thickness of the nonmagnetic supporting body is 5 &mgr;m or less and the thickness of the magnetic layer is 20 nm-100 nm, the metallic thin film magnetic recording medium further comprising a lining layer having the thickness of 20 nm-200 nm formed on a main face opposite to said magnetic layer formation face, of metal, non-metal or alloy or oxide compound thereof according to the vacuum thin film formation technology.

Abstract: An anti-static measure is taken against tape guide parts of a magnetic tape cassette by forming the tape guide parts of a conductive material and so on. An antistatic measure against a lid, an upper shell, a transparent window and a lower shell is taken by coating at least either of inside and outside of each of the lid, the upper shell, the transparent window and the lower shell with an anti-static film. A magnetic layer of a magnetic tape has a thickness of from 10 nm or more to 100 nm or less, and also contains oxygen in an amount of from 20 atm % or more to 30 atm % or less in a whole magnetic layer. An information recording surface of the magnetic tape has also a surface resistance of from 103&OHgr;/inch2 or more to 1012&OHgr;/inch2 or less.

Abstract: A magnetic recording medium comprising a thin magnetic metal film of which the thickness and remanent magnetization are smaller than ever and optimized to match the characteristics of the MR read head used with the recording medium. The thin magnetic metal film is formed on a nonmagnetic substrate and has a remanent magnetization and film thickness product Mr·&dgr; of 1 to 5 memu/cm2. Owing to this product Mr·&dgr;, a signal recorded on the magnetic recording medium can be reproduced with no distortion in a region where the MR read head maintains its linearity.

Abstract: A magnetoresistive head includes a magnetoresistive element sandwiched between a pair of soft magnetic material-made shields to detect signal from a magnetic tape under a magnetoresistance effect, the magnetoresistive element having a magnetic sensor disposed obliquely, at a predetermined azimuth angle, to a direction perpendicular in which the magnetic tape is fed or moved; the magnetoresistive head being installed on a rotating drum to read signal on the magnetic tape by the helical scanning method. A recording/reproducing apparatus includes a rotating drum having installed thereon the magnetoresistive head as reading head and an inductive magnetic head as writing head, to write and/or read signal from the magnetic tape by the helical scanning method.