摘要:
A magnetic-disk drive includes: a magnetic disk having a ridge pattern consisting of at least one ridge extending in the circumferential direction; a recording/reproduction head arranged over the surface of the magnetic disk and having a track width larger than the width of the ridge of the pattern and smaller than the pattern pitch; a device for rotating the magnetic disk; and a recording/reproduction circuit.
摘要:
A numerical control grinding machine, in which rough grinding and finish grinding wheels are used to machine a workpiece into a predetermined shape. A sensor detects the finish grinding wheel contacting the workpiece surface when shifting from the rough grinding to finish grinding operations and determines its position. The numerical controller of the grinding machine calculates the difference between actual and theoretical sizes of the workpiece and completion of the rough grinding operation based on the finish grinding wheel position. After that, the controller compensates the rough grinding wheel position in the next machining cycle for the difference calculated by the controller.
摘要:
A measuring instrument of magnetic field utilizing Faraday rotation is disclosed in which a medium exhibiting Faraday rotation includes at least one thin magnetic garnet film magnetized in a propagation direction of light and having a composition expressed by a general formula R.sub.3-x Q.sub.x (Fe.sub.5-y M.sub.y)O.sub.12 (where R indicates at least one element selected from a group consisting of Y, La, Lu, Ca, Sm and Bi, Q indicates at least one element selected from a group consisting of Gd, Eu, Er, Tm, Tb, Yb, Ho and Dy, M is at least one element selected from a group consisting of Ga, Al, Ge, Si, Sc, Mn, In, V and Cr, the value of x lies in a range expressed by a formula 0.1.ltoreq.x.ltoreq.3.0, and the value of y lies in a range expressed by a formula 0.ltoreq.y.ltoreq.5.0). According to this instrument, stable measured values are obtained independently of temperature variation.
摘要翻译:公开了利用法拉第旋转的磁场测量仪器,其中显示法拉第旋转的介质包括在光传播方向上被磁化并具有通式R3-xQx(Fe5-yMy)表示的组成的至少一个薄磁石榴石薄膜, O12(其中R表示选自Y,La,Lu,Ca,Sm和Bi中的至少一种元素,Q表示选自由Gd,Eu,Er,Tm,Tb,Yb组成的组中的至少一种元素) ,Ho和Dy,M是选自Ga,Al,Ge,Si,Sc,Mn,In,V和Cr中的至少一种元素,x的值在由式0.1表示的范围内, = x <= 3.0,y的值位于由公式0表示的范围内。 根据该仪器,独立于温度变化获得稳定的测量值。
摘要:
A grinding machine is provided wherein a pair of wheel slides are disposed respectively at both sides of a work support to be movable toward and away from the work table in a first direction. The wheel slides respectively carry turrets thereon in such a manner that each of the turrets is rotationally indexed about and slidable along an axis thereof extending in a second direction perpendicular to the first direction. Each of the turrets carries a plurality of grinding wheels which are rotatable about respective axes extending in the second direction, and when rotationally indexed selectively presents the grinding wheels to a machining station. The position of a selected one of the grinding wheels relative to a workpiece on the work support is adjusted in the first direction through the movement of each wheel slide and in the second direction through the movement of each turrets. Upon completion of the position adjustments, the work support is moved in a third direction perpendicular to said first and second directions, so that the workpiece is ground as it passes between a pair of grinding wheels having been presented to the machining station.
摘要:
Hydrogen ion is implanted twice or more at different acceleration voltages into desired portions of a magnetic film holding magnetic bubbles to form a magnetic bubble propagation path. This ensures production of an ion-implanted device having a sufficiently large anisotropic magnetic field parallel to the magnetic film and a high Curie temperature.
摘要:
A magneto-optical recording medium having a substrate and a magnetic layer composed of at least a recording layer and a supporting layer and being capable of retrieving information by utilizing the fact that when it is irradiated with a laser beam it produces the magneto-optical effect which affects its reflected light, characterized in that the recording layer has a lower Curie temperature than has the supporting layer and recording layer is thin enough for the laser beam to pass through. A magneto-optical recording medium as defined above, wherein the supporting layer is composed of a first supporting layer and a second supporting layer, and the recording layer, the first supporting layer, and the second supporting layer have Curie temperatures of T1, T2, and T3, respectively, which satisfy the following relationship. T1
摘要:
A magneto-optical data recording system comprises magnetic field pulse applying means for applying to a magneto-optic recording medium a magnetic field pulse of a polarity corresponding to code data to be recorded, and means for heating the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to be recorded. During recording, the magnetic field pulse applying means applies a magnetic field pulse of a polarity corresponding to code data along a track of the recording medium and the heating means continuously heats the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to thereby directly overwrite the code data. The magnetic field pulse applying means includes a magnetic coil driven by code data from a source of code data (data generator). The heating means includes an optical head which comprises a source of laser beam driven by a laser driver and an optical system which focuses the laser beam from the source of laser beam as a small light spot onto the recording medium.
摘要:
The present invention aims to solve problems involved in the formation of a conductive or insulating layer in a pattern form by photolithography, i.e., an environmental problem associated with handling a solvent and a problem associated with wastewater treatment in the development with an aqueous alkaline solution. A method for forming a conductive layer (an anode bus 3) or an insulating layer (a barrier 1) on a glass substrate by photolithography using a photosensitive slurry solution prepared by mixing a low-melting glass powder as a binder and a conductive or insulating powder into a PVA-based, water-soluble photosensitive solution, wherein the content of B.sub.2 O.sub.3 component in the whole low-melting glass powder is closely regulated to not more than 6% by weight. This enables coating without gelation of PVA. Unlike the conventional photolithography using a solvent type photosensitive slurry, the method of the present invention can solve the environmental problem associated with handling a solvent and the problem associated with wastewater treatment in the development with an aqueous alkaline solution.
摘要翻译:本发明的目的在于解决通过光刻技术形成图形形式的导电或绝缘层所涉及的问题,即在用碱性水溶液进行显影时与处理溶剂有关的环境问题和与废水处理有关的问题。 通过光刻法在玻璃基板上形成导电层(阳极母线3)或绝缘层(阻挡层1)的方法,使用通过混合低熔点玻璃粉末作为粘合剂而制备的感光浆料溶液和导电或绝缘 粉末成为PVA系的水溶性感光性溶液,其中,全部低熔点玻璃粉末中的B 2 O 3成分的含量被严格控制在6重量%以下。 这使得涂层不会凝胶化PVA。 与使用溶剂型感光浆料的常规光刻不同,本发明的方法可以解决与碱性溶液的显影相关的处理溶剂和与废水处理有关的问题的环境问题。
摘要:
A magneto-optical data recording system comprises magnetic field pulse applying apparatus for applying to a magneto-optic recording medium a magnetic field pulse of a polarity corresponding to code data to be recorded, and apparatus for heating the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to be recorded. During recording, the magnetic field pulse applying apparatus applies a magnetic field pulse of a polarity corresponding to code data along a track of the recording medium and the heating apparatus continuously heats the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to thereby directly overwrite the code data. The magnetic field pulse applying apparatus includes a magnetic coil driven by code data from a source of code data (data generator). The heating apparatus includes an optical head which comprises a source of laser beam driven by a laser driver and an optical system which focuses the laser beam from the source of laser beam as a small light spot onto the recording medium.
摘要:
A method of producing a high-strength cold-rolled steel sheet suitable for working uses which utilizes a steel material having the following composition: not more than 0.006 wt % of C, not more than 0.5 wt % of Si, not more than 2.0 wt % of Mn, and not less than 0.01 wt % but not more than 0.10 wt % of Ti, the Ti, C and N contents being determined to meet the condition of Ti>(48/12) C wt %+(48/14) N wt %, the steel also consisting essentially of not less than 0.0010 wt % but not more than 0.0100 wt % of Nb, not less than 0.0002 wt % but not more than 0.0020 wt % of B, not less than 0.03 wt % but not more than 0.20 wt % of P, not more than 0.03 wt % of S, not less than 0.010 wt % but not more than 0.100 wt % of Al, not more than 0.008 wt % of N, not more than 0.0045 wt % of O, and the balance substantially Fe and incidental inclusions. The steel material is cast and hot-rolled and then subjected to a cold rolling conducted at a sheet temperature not higher than 300.degree. C. under such a condition that the sum of the rolling reductions of passes which meet the following condition between said sheet temperature (T .degree.C.) and the strain rate .epsilon. (S-1) is 50% or greater:T.times..epsilon..gtoreq.50,000.degree. C. S.sup.-1The steel sheet is then continuously annealed or galvannealed.