Abstract:
A magnetic recording medium is described, which comprises a support having thereon a substantially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic metal powder or a ferromagnetic hexagonal ferrite powder dispersed in a binder provided on the lower layer, which is a magnetic recording medium for recording signals of from 0.17 to 2 G bit/inch2 of areal recording density, wherein the dry thickness of the magnetic layer is from 0.05 to 0.30 &mgr;m , &phgr;m is from 10.0×10−3 to 1.0×10−3 emu/cm2, the coercive force of the magnetic layer is 1,800 Oe or more, and a filler having an average particle size of from 0.05 to 0.3 &mgr;m is present on the surface layer of the support in an amount of from 5,000,000 to 30,000,000/mm2.
Abstract:
A magnetic recording medium is described, which comprises a support having thereon a magnetic layer comprising a ferromagnetic metal powder dispersed in a binder, which is a magnetic recording medium for recording signals of from 0.17 to 2 G bit/inch2 of areal recording density, wherein the coercive force of said magnetic layer is 1,800 Oe or more, said ferromagnetic metal powder comprises Fe and Co, and the atomic ratio of Al/(Fe+Co) is from 3.0 to 15.4%.
Abstract:
A magnetic recording medium is disclosed, which comprises a support having thereon a substantially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic metal powder or a ferromagnetic hexagonal ferrite powder dispersed in a binder formed on the lower layer, which is a magnetic recording medium for recording signals having areal recording density of from 0.17 to 2 G bit/inch2, wherein the coercive force of the magnetic layer is 1,800 Oe or more, the average long axis length of the ferromagnetic metal powder is 0.15 &mgr;m or less, and the average particle size of the ferromagnetic hexagonal ferrite powder is 0.10 &mgr;m or less; or wherein the dry thickness of the magnetic layer is from 0.05 to 0.30 &mgr;m, &phgr;m is from 10.0×10−3 to 1.0×10−3 emu/cm2, and the coercive force of the magnetic layer is 1,800 Oe or more. The object of the present invention is to provide a magnetic recording medium which is markedly improved in electromagnetic characteristics, particularly, high density recording characteristics, and is excellent in durability: and to provide a high capacity magnetic recording medium, in particular, a disc-like magnetic recording medium, having a high recording capacity of from 0.17 to 2 Gbit/inch2.
Abstract:
The present invention provides a magnetic recording medium for high density recording, which has very good repeated running durability and excellent storage stability under high temperature and high humidity conditions. The magnetic recording medium comprises a magnetic layer having ferromagnetic powder and a binder dispersed therein, said magnetic layer being provided on a non-magnetic support, whereby said magnetic layer contains a diester compound expressed by a chemical formula (1) given below: ##STR1## where R.sup.1 and R.sup.2 each represents a saturated hydrocarbon group having 5 to 21 carbon atoms, and at least one substance selected from a group of organic phosphorus compounds expressed by the chemical formulae (2) to (4): ##STR2## where R represents a substituted or unsubstituted alkyl group, alkenyl group or aryl group, and n represents 1 or 2, and M represents a hydrogen atom, an alkali metal or an alkali earth metal.
Abstract:
Disclosed is a frame-supported pellicle for dust-proofing of a photolithographic photomask used for patteriwse light exposure in the manufacturing process of, for example, semiconductor devices, which comprises (a) a frame member, (b) a transparent polymeric film supported by the frame member and (c) a coating layer of a sticky adhesive on one surface of the polymeric film to capture any dust particles in the space between the photomask and the pellicle. The inventive pellicle is imparted with a greatly improved serviceable life with stability against ultraviolet irradiation relative to the adhesive coating layer which is formed from a specific organo-polysiloxane-based adhesive composition.
Abstract:
A magnetic recording medium having excellent electromagnetic characteristics and well adapted for video use, which comprises a non-magnetic support having provided thereon at least two magnetic layers each comprising a ferromagnetic powder and a binder resin, wherein the uppermost magnetic layer arranged farthest from the support contains a cobalt-containing iron oxide powder having an Fe.sup.2+ /Fe.sup.3+ mole ratio of 20/100 to 50/100 and a coercive force of 650 to 1,500 Oe, and at least one of said magnetic layers is a lower magnetic layer in contact with the uppermost magnetic layer and contains a cobalt-containing iron oxide powder having an Fe.sup.2+ /Fe.sup.3+ mole ratio of less than 20/100 and a coercive force of 0.6 to 1.0 times that of the cobalt-containing iron oxide powder contained in the uppermost magnetic layer.
Abstract translation:一种具有优异的电磁特性并且非常适合于视频使用的磁记录介质,其包括非磁性载体,其上设置有至少两个磁性层,每个磁性层包含铁磁性粉末和粘合剂树脂,其中最上层的磁性层布置在与载体 含有Fe 2+ / Fe 3+摩尔比为20/100〜50/100,矫顽力为650〜1500Oe的钴的氧化铁粉末,并且所述磁性层中的至少一个是与 并且含有Fe 2+ / Fe 3+摩尔比小于20/100的钴的氧化铁粉末和矫顽力为包含在最上层磁性层中的含钴氧化铁粉末的矫顽力的0.6〜1.0倍。
Abstract:
A main shaft has a shaft cylindrical portion extending from an outer periphery of a large-diameter portion. A drum has a drum cylindrical portion extending from an outer periphery of a drum plate portion. An axial forward end of the drum cylindrical portion is arranged in an inside of the shaft cylindrical portion. A frictional engagement unit of a clutch is provided in an inside of the shaft cylindrical portion. A motor generator has a rotor, which is firmly fitted to outer walls of the large-diameter portion and the shaft cylindrical portion and rotatable relative to a stator. A working-oil supply passage is formed in an inside of an input shaft.
Abstract:
A substrate-incorporated capacitor includes a first electrode extending in a predetermined direction, a dielectric layer arranged on part of the first electrode, a second electrode arranged on the dielectric layer and facing the first electrode through the dielectric layer, and an electrode layer arranged on the first electrode surrounding the dielectric layer and connected to the first electrode. Part of the electrode layer is arranged on an end of the dielectric layer and is spaced apart from the second electrode in the predetermined direction, and the part of the electrode layer faces the first electrode through the dielectric layer.
Abstract:
A problem to be solved is to suppress deterioration of insulating properties in a stacked structure with a dielectric film formed by powder spraying coating process, and in a method of manufacturing the stacked structure. In a stacked structure according to the present invention, a dielectric layer 3 is provided between a first conductive layer 1 and a second conductive layer 2. The dielectric layer 3 includes an underlying layer 31 formed by applying a dispersion solution containing dielectric particles onto the first conductive layer 1, and a dielectric film 32 formed on the underlying layer 31 by powder spraying coating process. A method of manufacturing the stacked structure according to the present invention includes a dielectric layer forming step of forming the dielectric layer 3 on the first conductive layer 1, and a conductive layer forming step of forming the second conductive layer 2 on the dielectric layer 3. The dielectric layer forming step includes an underlying layer forming step of forming the underlying layer 31 by applying a dispersion solution containing dielectric particles onto the first conductive layer 1, and a dielectric film forming step of forming the dielectric film 32 on the underlying layer 31 by powder spraying coating process.
Abstract:
There is provided a multilayer substrate comprising, at least, a single crystal MgO substrate, an iridium (Ir) film heteroepitaxially grown on the MgO substrate, a diamond film vapor-deposited on the Ir film, wherein crystallinity of the Ir film is that a full width at half maximum (FWHM) of a diffracted intensity peak in 2 θ=46.5° or 2θ=47.3° attributed to Ir (200) analyzed by X-ray diffraction method with a wavelength of λ=1.54 Å is 0.40° or less. Thereby, there is provided a multilayer substrate that is delamination-proof at the respective interfaces between the MgO substrate and the Ir film and between the Ir film and the diamond film, and, particularly, that has a single crystal diamond film of a large area as a continuous film.