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公开(公告)号：US4923748A
公开(公告)日：1990-05-08
申请号：US179924
申请日：1988-04-11
申请人： Tadashi Yasunaga , Akio Yanai , Koji Sasazawa
发明人： Tadashi Yasunaga , Akio Yanai , Koji Sasazawa
CPC分类号： G11B5/653 , Y10S428/90 , Y10T428/265
摘要： A durable, weather-resistant and anti-corrosive magnetic recording medium is disclosed, which comprises a non-magnetic support having coated thereon a thin film type magnetic layer comprising iron, nitrogen oxygen and at least one element selected from the group consisting of titanium, silicon, aluminum and tantalum.
摘要翻译： 公开了一种耐用，耐候和抗腐蚀的磁记录介质，其包括其上涂覆有薄膜型磁性层的非磁性载体，所述薄膜型磁性层包含铁，氮氧和选自钛， 硅，铝和钽。
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公开(公告)号：US4990361A
公开(公告)日：1991-02-05
申请号：US403075
申请日：1989-08-28
申请人： Tadashi Yasunaga , Akio Yanai , Koji Sasazawa
发明人： Tadashi Yasunaga , Akio Yanai , Koji Sasazawa
CPC分类号： G11B5/85
摘要： A method and apparatus for producing a magnetic recording medium having an improved durability with a simple process. Nitrogen molecules and/or nitrogen atoms in an excited state are applied to a nonmagnetic substrate simultaneously with an iron vapor flow and an ion flow. The resulting magnetic recording medium has superior corrosion resistance and can be produced at a high film forming rate, and is especially suitable for high density recording because of its high coercive force.
摘要翻译： 一种以简单的工艺制造具有改善的耐久性的磁记录介质的方法和装置。 处于激发态的氮分子和/或氮原子与铁蒸气流和离子流同时施加到非磁性基底上。 所得到的磁记录介质具有优异的耐腐蚀性，并且可以以高的成膜速度生产，并且由于其高矫顽力而特别适用于高密度记录。
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公开(公告)号：US4873154A
公开(公告)日：1989-10-10
申请号：US151722
申请日：1988-02-03
申请人： Tadashi Yasunaga , Akio Yanai
发明人： Tadashi Yasunaga , Akio Yanai
CPC分类号： G11B5/656 , Y10S428/90
摘要： A magnetic recording medium, such as a tape, having a thin ferromagnetic film containing Fe.sub.a Co.sub.b N.sub.c O.sub.d satisfying: 32%.ltoreq.a.ltoreq.90%; 5%.ltoreq.b.ltoreq.55%; 2%.ltoreq.c.ltoreq.28%; 5%.ltoreq.d.ltoreq.23%; and c+d.ltoreq.40%. Such a film provides enhanced resistance against corrosion.
摘要翻译： 具有包含FeaCobNcOd的薄铁磁性薄膜的磁记录介质，如磁带，满足：32％
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公开(公告)号：US4702938A
公开(公告)日：1987-10-27
申请号：US933446
申请日：1986-11-21
申请人： Tadashi Yasunaga , Akio Yanai , Ryuji Shirahata
发明人： Tadashi Yasunaga , Akio Yanai , Ryuji Shirahata
摘要： A process for fabricating magnetic tape in which a tape substrate in passed through a stream of evaporating material so as to present a continuously varying angle of incidence to the stream. The maximum and minimum angles of incidence are defined. Oxidizing gas is applied to the tape at the minimum angle of incidence and at an intermediate angle.
摘要翻译： 一种用于制造磁带的方法，其中带状基底通过蒸发材料流以便呈现与流的连续变化的入射角。 定义最大和最小入射角。 氧化气体以最小入射角以中间角度施加到带上。
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公开(公告)号：US5114778A
公开(公告)日：1992-05-19
申请号：US261068
申请日：1988-10-24
申请人： Akio Yanai , Tadashi Yasunaga
发明人： Akio Yanai , Tadashi Yasunaga
CPC分类号： G11B5/7325 , G11B5/738 , Y10S428/90 , Y10T428/24355
摘要： A magnetic recording medium having improved running properties and electromagnetic characteristics is disclosed, which comprises a non-magnetic support having provided thereon an underlayer and a magnetic layer composed of a thin ferromagnetic metal film in that order, said underlayer being composed mainly of a high molecular weight compound having on the surface thereof an uneven orange peel texture, wherein said underlayer has an average surface area of a unit cell of the uneven orange peel texture of from 3.times.10.sup.-6 to 3.times.10.sup.-3 mm.sup.2, and has a surface roughness of from 0.1 to 0.01 .mu.m.
摘要翻译： 公开了一种具有改善的运行特性和电磁特性的磁记录介质，其包括其上设置有底层的非磁性支撑体和由薄铁磁金属膜构成的磁性层，所述底层主要由高分子量 其表面上具有不均匀的橙皮纹理，其中所述底层具有不均匀橙皮纹理的单位晶胞的平均表面积为3×10 -6至3×10 -3 mm 2，并且具有0.1的表面粗糙度 至0.01亩。
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公开(公告)号：US4801500A
公开(公告)日：1989-01-31
申请号：US133829
申请日：1987-12-16
申请人： Tadashi Yasunaga , Akio Yanai
发明人： Tadashi Yasunaga , Akio Yanai
CPC分类号： G11B5/64 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a thin ferromagnetic metal film, wherein the thin ferromagnetic metal film contains an iron atom, a nitrogen atom and an oxygen atom within the following atomic percent ranges:57.ltoreq.a.ltoreq.902.ltoreq.b.ltoreq.205.ltoreq.c.ltoreq.23b+c
摘要翻译： 描述了一种磁记录介质，其包括在其上设置有薄铁磁金属膜的非磁性载体，其中所述薄铁磁性金属膜在以下原子百分比范围内含有铁原子，氮原子和氧原子： 其中a，b和c分别表示铁原子，氮原子和氧原子的百分比，= a
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公开(公告)号：US4956229A
公开(公告)日：1990-09-11
申请号：US175466
申请日：1988-03-30
申请人： Tadashi Yasunaga , Akio Yanai , Koji Sasazawa , Makoto Nagao
发明人： Tadashi Yasunaga , Akio Yanai , Koji Sasazawa , Makoto Nagao
CPC分类号： G11B5/653 , Y10S428/90 , Y10T428/265
摘要： A durable, rust- and scratch-resistant magnetic recording medium coated thereon a thin ferromagnetic film comprising an iron oxide nitride, wherein said film is an aggregation of pillar particles of said iron oxide nitride, said particles having a higher nitrogen content on their surface than inside the particles.
摘要翻译： 在其上涂覆有包含氧化铁氮化物的薄铁磁膜的耐久，防锈和耐划伤的磁记录介质，其中所述膜是所述氧化铁氮化物的柱状颗粒的聚集体，所述颗粒在其表面上具有较高的氮含量， 颗粒内
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公开(公告)号：US4948626A
公开(公告)日：1990-08-14
申请号：US305050
申请日：1989-02-02
申请人： Tadashi Yasunaga , Koji Sasazawa , Akio Yanai
发明人： Tadashi Yasunaga , Koji Sasazawa , Akio Yanai
CPC分类号： G11B5/85
摘要： A method for producing a thin-film magnetic recording medium having an improved corrosion resistance and which permits production of the medium at a high speed. A magnetic material vapor flow from an evaporation source and a gas or ion flow are applied to a nonmagnetic base in an evaporation chamber and the two flows reacted with each other to form the thin-film magnetic layer on the nonmagnetic base. During this process, the expression P.sub.1 /P.sub.0 .ltoreq.0.1 is maintained, wherein P.sub.0 represents the degree of vacuum in the evaporation chamber, under a first condition where only the gas or ion flow is applied after the pressure in the chamber has been reduced to a predetermined degree of vacuum, and P.sub.1 represents the degree of vacuum in the chamber under a second condition where the magnetic material vapor flow is applied to the nonmagnetic base simultaneously with the gas or ion flow. The rate of formation of the thin-film magnetic layer is 200 .ANG./sec or more on the average.
摘要翻译： 一种制造具有改善的耐腐蚀性且允许高速生产介质的薄膜磁记录介质的方法。 来自蒸发源和气体或离子流的磁性材料蒸汽流被施加到蒸发室中的非磁性基底，并且两个流彼此反应以在非磁性基底上形成薄膜磁性层。 在该过程中，保持表达式P1 / P0 <0.1，其中P0表示蒸发室中的真空度，在第一条件下，在室中的压力已经减小之后仅施加气体或离子流 达到预定的真空度，P1表示在与气体或离子流同时向非磁性基底施加磁性材料蒸气流的第二状态下的室内的真空度。 平均薄膜磁性层的形成速度为200安培/秒以上。
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公开(公告)号：US4511594A
公开(公告)日：1985-04-16
申请号：US459021
申请日：1983-01-18
申请人： Akio Yanai , Ryuji Shirahata
发明人： Akio Yanai , Ryuji Shirahata
摘要： A system of manufacturing a magnetic recording medium in which a magnetic metal or alloy is heated and evaporated by an electron beam gun so that vacuum-evaporated magnetic film is formed on a non-organic or organic macromolecular base. A plasma generating coil is disposed near an evaporating source and an electron beam passes through the hollow portion of the coil in preferably a direction coaxial with the axis of the coil. High frequency power is applied to the coil and vacuum deposition is carried out with a plasma generated thereby. The flow of vapor of magnetic metal or alloy is applied obliquely to the base and an oxidation gas is introduced into a vacuum container for forming the magnetic film.
摘要翻译： 一种制造磁记录介质的系统，其中磁性金属或合金被电子束枪加热和蒸发，使得在非有机或有机高分子基底上形成真空蒸发的磁性膜。 等离子体产生线圈设置在蒸发源附近，并且电子束优选地通过线圈的中空部分优选地与线圈的轴线同轴的方向。 对线圈施加高频功率，并用等离子体进行真空沉积。 将磁性金属或合金的蒸气流倾斜地施加到基底，并将氧化气体引入用于形成磁性膜的真空容器中。
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公开(公告)号：US4333985A
公开(公告)日：1982-06-08
申请号：US257286
申请日：1981-04-24
申请人： Ryuji Shirahata , Akio Yanai , Tatsuji Kitamoto
发明人： Ryuji Shirahata , Akio Yanai , Tatsuji Kitamoto
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/265 , Y10T428/31696 , Y10T428/31699 , Y10T428/31935
摘要： A magnetic recording medium is described comprising a protective layer including at least one substance selected from the group consisting of poly(paraxylylene), poly(monochloroparaxylylene), and poly(dichloroparaxylylene) formed on a magnetic recording layer comprising a thin ferromagnetic metal film.
摘要翻译： 描述了一种磁记录介质，其包括保护层，该保护层包括形成在包含薄铁磁金属膜的磁记录层上的聚（对二甲苯），聚（对氯对二甲苯）和聚（二氯对二甲苯）中的至少一种物质。
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