摘要:
A recording medium and method of performing recording/reproducing on the recording medium. The recording medium includes a multi-layer structure wherein at least two kinds of atomic layers are alternately laminated on a support. The elements of the atomic layers are selected so that they have secondary electron emission characteristics, such as secondary electron emission efficiency or secondary electron energy spectrums different from each other and do not form any alloy with each other, or so that a reacted mixture between the at least two kinds of atomic layers has secondary electron characteristics different from the atomic layers. The recording is performed by irradiating the surface of the recording medium with a recording beam selected from an electron beam, a charged particle beam, and a neutral particle beam to expose the next lower different kind of atomic layer of forma mixture. The reproducing is performed by irradiating the surface of the recording medium carrying information recorded thereon with a reproducing beam selected from the electron beam, a charged particle beam, and a neutral particle beam to emit secondary electrons from its surface thereof, and detecting the difference in the secondary electron emission characteristic between the emitted secondary electrons.
摘要:
A perpendicular magnetic recording medium such as a floppy disk is created by providing on at least one surface of a non-magnetic support, a magnetic layer having perpendicular magnetic anisotropy and a protective layer by sputtering. First, a magnetic layer is provided, secondly, the magnetic layer is surface treated by a plasma treatment or by applying an oxide layer or a nitride layer thereon and thirdly, the protective layer is applied thereto.
摘要:
A method of preparing a magnetic recording medium in which a magnetic layer is deposited on a non-magnetic support and then a carbon protective layer is sputtered onto the magnetic layer. The sputtering is performed with a bias voltage of -10V to -100V being applied in the vicinity of the support and magnetic layer.
摘要:
A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a thin magnetic metal film and a protective layer mainly comprising carbon having a graphite structure containing at least one element selected from the group consisting of Mn, Mo, Nb, Ta, Ti, V, Cr and W.
摘要:
Contaminant magnetic dust particles and flakes generated during the thin film coating of a substrate 9 in a vacuum chamber 1 are gravitationally collected in catch pans or troughs 8 disposed below the deposition zones. Magnets 10 are provided under the bottoms of the pans to enhance the attraction and retention of the particles. The contaminants may alternatively or additionally be removed directly from an upper surface of the substrate web by sandwiching one or more of its horizontal conveyance runs between a pair of magnets 22, 23, with the pole face area of the lower magnet being larger than that of the upper one.
摘要:
A magnetic recording medium comprises a non-magnetic substrate and at least one layer of obliquely deposited magnetic crystals which contains, as a main constituent, Co or a Co--Ni based alloy containing Cr in an amount within the range of 2 to 8 atom % and has a density of 5.0 g/cm.sup.3 or more, said layer being formed on said non-magnetic substrate.
摘要翻译:磁记录介质包括非磁性基底和至少一层倾斜沉积的磁性晶体,其包含以2至8原子%的量含有Cr的Co或Co-Ni基合金作为主要成分, 并且具有5.0g / cm 3以上的密度,所述层形成在所述非磁性基板上。
摘要:
A method of making a magnetic film target for use in sputtering characterized by forming a film of a magnetic material on a substrate by ion-plating a raw magnetic material thereon. The raw magnetic material is either identical with the magnetic film material or an ingredient or ingredients for constituting it. In the latter case, one or more metallic ingredients are simultaneously ion-plated in the same system to form a magnetic alloy or compound film on the substrate. To prepare a magnetic alloy target in which the composition changes in the thickness direction, the ion plating ratio of respective metallic ingredients is changed with time.
摘要:
An electrode master for ferroelectric recording records information on a ferroelectric recording medium in which the direction of polarization of a ferroelectric material has been unified in one direction by applying a voltage thereto, based on the direction of polarization of the ferroelectric material, by applying voltage pulses to the ferroelectric recording medium. The electrode master includes an electroconductive base material; a plurality of electrode convexes provided on a surface of the electroconductive base material so as to correspond to information to be recorded on the ferroelectric recording medium; and an electrode terminal conducted to each of the electrode convexes and provided on the electroconductive base material.
摘要:
A communication apparatus includes an input unit that inputs names of repeater stations to which the local communication apparatus and a communication counterpart belong respectively, a memory storing identification information of each repeater station, and information needed to set a communication path from the repeater station to another repeater station as communication path setting information associated with the name of the repeater station, an information retrieving section that retrieves identification information of the repeater station, and information needed to set a communication path to another repeater station from the associated information stored in the memory based on the input name of the repeater station, and a communication frame generating section that generates a communication frame including the identification information of the repeater station, and the information needed to set the communication path from the repeater station to which the local communication apparatus belongs to the repeater station of the communication counterpart from a result of the information retrieval.
摘要:
Provided is a method of magnetic transfer. The method includes initially DC-magnetizing a transfer-recipient disc in a circumferential direction, by applying a magnetic field to the transfer-recipient disc in the circumferential direction thereof bringing initially DC-magnetized transfer-recipient disc and a master disc into close contact with each other, on the top side of the master disc a magnetic layer including a great number of protrusions that configure a magnetic pattern being formed; and executing magnetic transfer in such a way that a magnetic-field generation device is provided, and that, when a magnetic field is applied in a circumferential direction to the transfer-recipient disc and the master disc, transfer of the magnetic pattern of the master disc onto the transfer-recipient disc occurs.