Abstract:
The present invention provides a disc magnetic recording medium which provides remarkable improvements in electromagnetic characteristics, particularly high density recording properties, and exhibits excellent magnetic properties with various sizes. A disc type magnetic recording medium is disclosed, comprising a substantially non-magnetic layer and a magnetic layer provided on a non-magnetic support in this order, said magnetic layer comprising a ferromagnetic metal fine powder or ferromagnetic hexagonal ferrite fine powder dispersed in a binder, wherein said non-magnetic support is an aramide or polyethylene naphthalate having a central plane average surface roughness SRa of not more than 10 mm and there is the following relationship between the thickness d (.mu.m) of the non-magnetic support and the outermost diameter D (mm) of the recording area:1.25.ltoreq.D/d.ltoreq.2.50 (when the non-magnetic support is an aramide)1.00.ltoreq.D/d.ltoreq.2.00 (when the non-magnetic support is a polyethylene naphthalate)
Abstract translation:本发明提供一种盘式磁记录介质,其提供了电磁特性,特别是高密度记录性能方面的显着改进,并表现出优异的各种尺寸的磁特性。 公开了一种盘式磁记录介质,其包括基本上非磁性层和设置在非磁性载体上的磁性层,所述磁性层包含分散在粘合剂中的铁磁性金属细粉末或铁磁六方铁氧体细粉末 其中所述非磁性载体是中心平面平均表面粗糙度SRa不超过10mm的芳族聚酰胺或聚萘二甲酸乙二醇酯,并且非磁性载体的厚度d(μm)与最外层 记录区域的直径D(mm):1.25 D / d <2.25(当非磁性载体是芳族聚酰胺时)1.00 D / d <2.00(当非磁性载体 是聚萘二甲酸乙二醇酯)
Abstract:
A magnetic recording medium is described, which comprises a nonmagnetic support having thereon at least one magnetic layer containing ferromagnetic particles dispersed in a binder, wherein the magnetic recording medium has at least one magnetic layer containing at least hexagonal ferrite magnetic particles and the magnetic layer containing the hexagonal ferrite magnetic particles has a coercive force, Hc, of from 1,300 to 5,000 Oe, a ratio of the Hc to an anisotropic magnetic field HK thereof, Hc/HK, of from 0.30 to 1.0, and a squareness ratio of in-plane direction, SQ, of from 0.65 to 1.00.
Abstract:
The present invention is directed to a magnetic recording medium comprising a non-magnetic support having provided thereon a plurality of magnetic layers composed of a lower magnetic layer comprising a ferromagnetic powder and a binder, and an upper magnetic layer comprising a ferromagnetic powder being provided on the lower magnetic layer, wherein the ferromagnetic powder contained in the upper magnetic layer has a length of major axis not longer than 0.30 .mu.m and a crystallite size not larger than 400 .ANG., the upper magnetic layer has a dry thickness of not more than 1.20 .mu.m, and the surface of the upper magnetic layer has a center-line average surface roughness (Ra) not more than 0.015 .mu.m.
Abstract:
Disclosed is a magnetic recording medium which is improved in electromagnetic conversion and running durability which includes a magnetic layer containing a ferromagnetic powder dispersed in a binder on a non-magnetic support, wherein the sum of the elastic modulus in a longer direction of the non-magnetic support and the elastic modulus in a width direction of the non-magnetic support is 1,250 kg/mm.sup.2 or more; an elastic modulus in a longer direction of the magnetic layer is 0.6 to 3.0 times as much as the elastic modulus in the longer direction of the non-magnetic support; and an elastic modulus in a width direction of the magnetic layer is 0.4 to 2.0 times as much as the elastic modulus in the width direction of the non-magnetic support.
Abstract translation:公开了一种提高电磁转换和运行耐久性的磁记录介质,其包括在非磁性载体上含有分散在粘合剂中的铁磁粉末的磁性层,其中非磁性载体的长度方向上的弹性模量之和, 磁性载体和非磁性载体的宽度方向的弹性模量为1250kg / mm 2以上; 磁性层的长度方向的弹性模量是非磁性载体的长度方向的弹性模量的0.6〜3.0倍, 磁性层的宽度方向的弹性模量为非磁性载体的宽度方向的弹性模量的0.4〜2.0倍。
Abstract:
Disclosed is an X-ray transmitting frame-supported membrane of silicon nitride suitable as a mask blank of an X-ray lithographic mask having outstandingly high resistance against irradiation with high-energy radiations and high transmission of light of a wavelength of 633 nm. These very desirable properties are obtained as a consequence of the extremely low content, i.e. 1.0 atomic % or less, of hydrogen in the silicon nitride, which can be achieved as a result of the specific preparation procedure by the CVD method in which the reactant gases are silane or disilane and ammonia in a specified mixing ratio to be reacted under a specified pressure and at a specified temperature.
Abstract:
A pellicle for dust-proofing of a photolithographic mask used for patterning in the manufacturing process of semiconductor devices. The drawback due to dust deposition can be greatly decreased in the use of a pellicle made from a fluorocarbon resin which is a copolymer of tetrafluoroethylene and another fluorocarbon monomer capable of introducing a cyclic perfluoroether group into the molecule when the pellicle film is rendered antistatically hydrophilic, for example, by a plasma treatment.
Abstract:
Disclosed is an X-ray-permeable membrane for X-ray lithographic mask for fine patterning in the manufacture of semiconductor devices having good transparency to visible light and exhibiting excellent resistance against high-energy beam irradiation. The membrane has a chemical composition expressed by the formula SiC.sub.x N.sub.y and can be prepared by the thermal CVD method in an atmosphere of a gaseous mixture consisting of gases comprising, as a group, the elements of silicon, carbon and nitrogen such as a ternary combination of silane, propane and ammonia.
Abstract translation:公开了一种用于X射线光刻掩模的X射线透过膜,用于制造对可见光具有良好透明度并且显示出优异的高能束照射阻力的半导体器件的精细图案化。 膜具有由式SiC x N y表示的化学组成,并且可以在气体混合物气氛中通过热CVD法制备,所述气体混合物由以下组成的气体组成,所述气体包含硅,碳和氮的元素,例如三元组合 硅烷,丙烷和氨。
Abstract:
A single-crystal diamond growth base material on which single-crystal diamond is grown having at least a base substrate of a material having a linear expansion coefficient smaller than that of MgO and not smaller than 0.5×10−6/K; a single-crystal MgO layer formed on a face of the base substrate where the single-crystal diamond is grown by a bonding method; and a film constituted of any one of an iridium film, a rhodium film, and a platinum film heteroepitaxially grown on the single-crystal MgO layer.
Abstract:
A substrate-incorporated capacitor includes a first electrode extending in a predetermined direction, a dielectric layer arranged on the first electrode, a second electrode arranged on the dielectric layer and facing the first electrode through the dielectric layer, wherein the second electrode includes an end projecting from the dielectric layer in the predetermined direction, and an electrode layer spaced apart from the first electrode in the predetermined direction. The end of the second electrode is connected to the electrode layer in the predetermined direction. The electrode layer includes a surface that is flush with a surface of the first electrode.
Abstract:
A fuel property sensor is provided with three bypass passages and a measure passage. The measure passage is located inside of a closed loop which is comprised of common tangential lines of adjacent bypass passages and a part of profile line of each bypass passage in a cross section perpendicular to the measure passage. Even if the fuel property sensor is rotated around the axis of a fuel pipe in assembling the fuel property sensor to the fuel pipe, at least one of two bypass passages is always located above the measure passage in a vertical direction. Hence, bubbles included in the fuel are restricted from flowing into the measure passage. The fuel property sensor can detect the concentration of ethanol contained in the fuel with high accuracy.