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公开(公告)号：EP0125457A3
公开(公告)日：1986-01-02
申请号：EP84103714
申请日：1984-04-05
Applicant: International Business Machines Corporation
Inventor： Gini, Donald , Stockton, Dean Bales
CPC classification number: D21H23/40 , B05C3/18 , B05C3/20 , D21H5/0015 , G11B5/842
Abstract: A coating head (10) for use in strip-coating paper-card material (20) with water-based, thixotropic magnetic recording ink, in order to produce disposable magnetic recording media which is intended for one write operation, followed by only a few read operations. The head sits on the card and contains a quantity of ink at ambient pressure and temperature. As the head and card move relative one another, the ink is subjected to a shear force, and a bottom surface layer of the ink is drawn into a trailing wall (50) of the head (10), which wall contains a metering orifice. This orifice is of gradually increasing cross-section. That is, the orifice's entrance area is smaller than is its exit area. In this manner, the ink is subjected to a coating interface through which the ink experiences a reduction in hydrodynamic pressure, and a decrease in velocity, as the volume of the coating orifice increases. As a result, the viscosity of the ink increases as the ink progresses through the coating orifice.
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公开(公告)号：EP0083011A3
公开(公告)日：1985-07-03
申请号：EP82111523
申请日：1982-12-11
Applicant: BASF Aktiengesellschaft
Inventor： Melzer, Milena , Schneider, Norbert , Kopke, Helmut , Schoettle, Klaus , Koester, Eberhard, Dr. , Balz, Werner, Dr. , Grau, Werner, Dr.
CPC classification number: G11B5/7022 , C08L75/06 , C08L71/00
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公开(公告)号：EP0067367A3
公开(公告)日：1984-08-29
申请号：EP82104844
申请日：1982-06-03
Applicant: Agfa-Gevaert AG
Inventor： Greiner, Joachim, Dr. , Gärtner, Eberhard
IPC: G11B05/84
CPC classification number: G11B5/845
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公开(公告)号：EP0046239A3
公开(公告)日：1983-08-03
申请号：EP81106127
申请日：1981-08-05
Inventor： Brunsch, Arwed, Dr. , Ruh, Wolf-Dieter , Trippel, Gerhard, Dr.
Abstract: To a substrate (2) consisting, for example, of AlMg5, a permalloy foil (3, 12) is applied by rolling, gluing or hot sealing. On top of the softmagnetic layer, a vertical recording layer (4) is applied. Thus, for example, an aluminium foil (22) may be applied on top of the permalloy foil by combining a permalloy and an aluminium foil (22) by rolling and by applying the composite foil (24) obtained to a substrate. Then the aluminium foil is anodized, forming vertically oriented pores extending down to the permalloy foil. By means of an electrochemical process, for example, magnetic material is filled into these pores which have a relatively small thickness compared to their length, so that the magnetic material is vertically oriented. The material used for the aluminium foil (22) is highly pure aluminium with an aluminium content of at least 99.999%.
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15.发明公开Iron-chromium-base spinodal decomposition-type magnetic (hard or semi-hard) alloy 失效铁 - 铬基磁共振分解型（硬或半硬）合金
公开(公告)号：EP0049141A3
公开(公告)日：1983-01-26
申请号：EP81304457
申请日：1981-09-28
Applicant: INOUE-JAPAX RESEARCH INCORPORATED
Inventor： Inoue, Kiyoshi , Kaneko, Hideo
Abstract: A spinodal decomposition typ ternary magnetic alloy and method of manufacture therefor, which contains, by weight, 3 to 40% vanadium, 5 to 45% chromium and the balance essentially iron. Optionally, the alloy may contain 0.1 to 8% by weight of at least one additional selected element. The alloy is easy to work and has excellent hard or semi-hard magnetic properties comparable with those of conventional iron-chromiumcobalt alloys, yet is relatively low in material cost and simple and inexpensive to manufacture.
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Patent Agency Ranking
公开(公告)号：EP0040437A3
公开(公告)日：1982-05-26
申请号：EP81103899
申请日：1981-05-20
Applicant: FUJI PHOTO FILM CO., LTD.
CPC classification number: C23C14/562 , G11B5/851 , H01F41/20
Abstract: A method and apparatus for manufacturing a magnetic recording medium using vacuum-deposition from an evaporated metal source having a very high efficiency and uniform deposition. The support (W) onto which the magneticfilm is to be evaporated is guided and conveyed along a curved path above a molten metal evaporating source (1,2) at a substantially constant speed. The curved path is shaped such that evaporated metal flow lines connecting a central point on the evaporation surface of the molten metal in the evaporating source (1,2) to corresponding intersection points on the support (W) form the same angle of incidence with respect to the longitudinal direction of the support (W) for all positions along the support (W) where the film is to be deposited. Endless belt structures (11, 11') including guide rollers and magnets (13,13') are used to form rising and falling paths for conveying the support along the desired curved path.
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公开(公告)号：WO1997038419A1
公开(公告)日：1997-10-16
申请号：PCT/US1997002058
申请日：1997-02-13
Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY , RUSTAD, Norman, E. , HAMMOND, Loren, W. , JOHNSON, Ralph, P. , CARLSON, Ricky, L.
IPC: G11B05/84
CPC classification number: G11B5/84
Abstract: A method of preparing a magnetic recording medium, the method comprising the step of providing a magnetic recording medium comprising a magnetic coating disposed on a substrate. The magnetic coating comprises a curable polymeric binder. The magnetic recording medium is wound into a stockroll while the magnetic coating is at a winding temperature that will accelerate cure of the magnetic coating. The magnetic coating is allowed to cure, optionally in an environment that maintains the magnetic coating at a temperature that accelerates cure. The magnetic recording medium is then slit.
Abstract translation: 一种制备磁记录介质的方法，所述方法包括提供包括设置在基板上的磁性涂层的磁记录介质的步骤。 磁性涂层包括可固化的聚合物粘合剂。 磁性记录介质被卷绕成库存卷，而磁性涂层处于将加速磁性涂层固化的缠绕温度。 允许磁性涂层固化，任选地在将磁性涂层维持在加速固化的温度的环境中。 然后将磁记录介质切开。
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公开(公告)号：WO1995004350A1
公开(公告)日：1995-02-09
申请号：PCT/US1993007295
申请日：1993-08-03
Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY , KOHLER, Gunter, A. , DUERST, Richard, W. , STUBBS, Daniel, P.
IPC: G11B05/84
CPC classification number: G11B5/725 , C23C16/26 , C23C16/513 , G11B5/72 , G11B5/8408
Abstract: The present invention provides a magnetic recording medium that includes a polymeric flexible substrate and a magnetic layer coating thereon, with a binderless carbon rich layer adhered to the magnetic layer. The present invention also provides a process for the plasma deposition of the carbon rich coating onto a substrate comprising the steps of: a) providing a substrate in a vacuum chamber; b) generating carbon rich plasma in the vacuum chamber by injecting a plasma gas suitable to provide a carbon rich coating into an elongated hollow cathode; and providing a sufficient voltage to create and maintain plasma; and maintaining a vacuum in the vacuum chamber sufficient for the plasma; and c) exposing the substrate to the plasma while the magnetic medium is influenced by a radio frequency bias electrode to accelerate the plasma toward the substrate and deposit the carbon rich coating on the substrate.
Abstract translation: 本发明提供了一种磁记录介质，其包括聚合物柔性基底和其上的磁性层涂层，其中无粘结剂碳富集层粘附到磁性层。 本发明还提供了一种用于将富碳涂层等离子体沉积到衬底上的方法，包括以下步骤：a）在真空室中提供衬底; b）通过将适合于提供富碳涂层的等离子体气体注入细长空心阴极，在真空室中产生富碳等离子体; 并提供足够的电压来产生和维持等离子体; 并且在真空室中保持足够的等离子体的真空; 以及c）将所述衬底暴露于所述等离子体，同时所述磁介质受到射频偏置电极的影响，以将所述等离子体加速到所述衬底并将所述富碳涂层沉积在所述衬底上。
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公开(公告)号：WO1993019463A1
公开(公告)日：1993-09-30
申请号：PCT/JP1993000315
申请日：1993-03-17
Applicant: MATOU, Kimitoshi
IPC: G11B05/84
Abstract: A disc body (1) is placed so as to overlap an atomization region (A), which has a substantially circular cross section, of an ultrafine particle generating nozzle (10) adapted to atomize a film-forming agent, and the film-forming agent is applied as the disc body (1) is turned around the center thereof. Peripheral portions of the disc body (1) pass the inner part of the atomization region, where the density of atomized particles is higher, but the deposition rate of the particles per unit area is lower because those portions pass relatively fast. On the other hand, the inner portions of the disc body pass the outer part of the atomization region where the density of atomized particles is lower, but the deposition rate of the particles per unit area is higher because those portions pass relatively slow. Accordingly, the quantity of the fine particles deposited on the disc body (1) is rendered uniform in the radial direction thereof.
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公开(公告)号：WO1991006948A1
公开(公告)日：1991-05-16
申请号：PCT/JP1990001386
申请日：1990-10-26
Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO , SATO, Motoharu , MURAMATSU, Kazuo , ONISHI, Yoshihiko , HAYASHI, Hidetaka
Inventor： KABUSHIKI KAISHA KOBE SEIKO SHO
IPC: G11B05/84
CPC classification number: G11B5/7325 , G11B5/656 , G11B5/84 , Y10S428/90 , Y10S428/928
Abstract: A method of producing a magnetic recording medium such as a magnetic disk, wherein a magnetic layer made of a Co alloy is formed on a carbon substrate and heat-treated at 250 to 1,450 DEG C so as to improve the coercive force. The heat-treatment is carried out in a magnetic field to obtain an improved squareness ratio. Higher coercive force can be obtained by forming a Cr underlayer on which the magnetic layer is formed. A higher-density magnetic recording medium can be provided by improving the coercive force and the squareness ratio.
Abstract translation: 一种制造诸如磁盘的磁记录介质的方法，其中在碳基板上形成由Co合金制成的磁性层，并在250至1,450℃下进行热处理，以提高矫顽力。 在磁场中进行热处理以获得改善的矩形比。 通过形成其上形成有磁性层的Cr底层可以获得更高的矫顽力。 可以通过提高矫顽力和矩形比来提供更高密度的磁记录介质。
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