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1. 发明授权

US07214436B2 Magnetic recording medium and process for producing same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US07214436B2
公开(公告)日：2007-05-08
申请号：US10439196
申请日：2003-05-15
申请人： Ryoichi Hiratsuka , Tomoe Ozaki , Taketoshi Sato , Miho Abiko , Ichiro Kanagawa , Kasumi Suzuki
发明人： Ryoichi Hiratsuka , Tomoe Ozaki , Taketoshi Sato , Miho Abiko , Ichiro Kanagawa , Kasumi Suzuki
IPC分类号： G11B5/66
CPC分类号： G11B5/72 , G11B5/8408
摘要： A magnetic recording medium of a metal thin-film type, which includes a magnetic layer and a carbon protective layer on a non-magnetic support member, and in which a non-magnetic metal thin-film is provided between the magnetic layer and the carbon protective layer, is provided. The magnetic recording medium thus produced can be run stably.
摘要翻译：一种金属薄膜型的磁记录介质，其在非磁性支撑构件上包括磁性层和碳保护层，并且其中在磁性层和碳之间提供非磁性金属薄膜提供保护层。这样制造的磁记录媒体可以稳定地运行。

2. 发明授权

US07449221B2 Metallic thin film type magnetic recording medium and method of manufacturing thereof 失效
标题翻译：金属薄膜型磁记录介质及其制造方法
公开(公告)号：US07449221B2
公开(公告)日：2008-11-11
申请号：US11427694
申请日：2006-06-29
申请人： Ryoichi Hiratsuka , Ichiro Kanagawa , Kasumi Suzuki , Tomoe Ozaki
发明人： Ryoichi Hiratsuka , Ichiro Kanagawa , Kasumi Suzuki , Tomoe Ozaki
IPC分类号： H05H1/24 , B05D5/12
CPC分类号： G11B5/7325 , G11B5/85
摘要： A method of manufacturing a metallic thin film type magnetic recording medium is provided. The method comprises the steps of arranging an initial substance of said recording medium in opposition to a plasma discharge electrode, said initial substance comprising a non-magnetic support base, a metallic layer capable of functioning as a metallic electrode formed on said non-magnetic support base and a metallic magnetic layer formed on said metallic layer, and forming a protection film on a surface of said initial substance of said recording medium by way of generating plasma discharge while feeding raw material gas between said metallic layer/said metallic magnetic layer and said plasma discharge electrode.
摘要翻译：提供一种制造金属薄膜型磁记录介质的方法。该方法包括以下步骤：将等离子体放电电极相对的所述记录介质的初始物质布置，所述初始物质包括非磁性支撑基底，能够用作形成在所述非磁性载体上的金属电极的金属层基底和形成在所述金属层上的金属磁性层，并且通过在所述金属层/所述金属磁性层和所述金属磁性层之间供给原料气体的同时产生等离子体放电而在所述记录介质的所述初始物质的表面上形成保护膜等离子体放电电极。

3. 发明授权

US07070871B2 Metallic thin film type magnetic recording medium and method of manufacturing thereof 失效
公开(公告)号：US07070871B2
公开(公告)日：2006-07-04
申请号：US10183227
申请日：2002-06-27
申请人： Ryoichi Hiratsuka , Ichiro Kanagawa , Kasumi Suzuki , Tomoe Ozaki
发明人： Ryoichi Hiratsuka , Ichiro Kanagawa , Kasumi Suzuki , Tomoe Ozaki
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/85
摘要： A method of manufacturing a metallic thin film type magnetic recording medium is provided. The method comprises the steps of arranging an initial substance of said recording medium in opposition to a plasma discharge electrode, said initial substance comprising a non-magnetic support base, a metallic layer capable of functioning as a metallic electrode formed on said non-magnetic support base and a metallic magnetic layer formed on said metallic layer, and forming a protection film on a surface of said initial substance of said recording medium by way of generating plasma discharge while feeding raw material gas between said metallic layer/said metallic magnetic layer and said plasma discharge electrode.

4. 发明申请

US20060240182A1 Metallic Thin Film Type Magnetic Recording Medium and Method of Manufacturing Thereof 失效
标题翻译：金属薄膜型磁记录介质及其制造方法
公开(公告)号：US20060240182A1
公开(公告)日：2006-10-26
申请号：US11427694
申请日：2006-06-29
申请人： Ryoichi Hiratsuka , Ichiro Kanagawa , Kasumi Suzuki , Tomoe Ozaki
发明人： Ryoichi Hiratsuka , Ichiro Kanagawa , Kasumi Suzuki , Tomoe Ozaki
IPC分类号： B05D5/12
CPC分类号： G11B5/7325 , G11B5/85
摘要： A method of manufacturing a metallic thin film type magnetic recording medium is provided. The method comprises the steps of arranging an initial substance of said recording medium in opposition to a plasma discharge electrode, said initial substance comprising a non-magnetic support base, a metallic layer capable of functioning as a metallic electrode formed on said non-magnetic support base and a metallic magnetic layer formed on said metallic layer, and forming a protection film on a surface of said initial substance of said recording medium by way of generating plasma discharge while feeding raw material gas between said metallic layer/said metallic magnetic layer and said plasma discharge electrode.
摘要翻译：提供一种制造金属薄膜型磁记录介质的方法。该方法包括以下步骤：将等离子体放电电极相对的所述记录介质的初始物质布置，所述初始物质包括非磁性支撑基底，能够用作形成在所述非磁性载体上的金属电极的金属层基底和形成在所述金属层上的金属磁性层，并且通过在所述金属层/所述金属磁性层和所述金属磁性层之间供给原料气体的同时产生等离子体放电而在所述记录介质的所述初始物质的表面上形成保护膜等离子体放电电极。

5. 发明授权

US07531251B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US07531251B2
公开(公告)日：2009-05-12
申请号：US11329668
申请日：2006-01-11
申请人： Ichiro Kanagawa , Kazuhiko Suzuki , Ryoichi Hiratsuka , Hidetoshi Honda
发明人： Ichiro Kanagawa , Kazuhiko Suzuki , Ryoichi Hiratsuka , Hidetoshi Honda
IPC分类号： G11B5/66
CPC分类号： G11B5/738 , G11B5/70 , G11B5/72 , G11B5/7305
摘要： A magnetic recording medium includes a nonmagnetic support having a thickness less than 7 μm and a width of 8 mm; a ferromagnetic metal layer disposed on a surface of the nonmagnetic support; and a reinforcing layer disposed on the other surface of the nonmagnetic support. The magnetic recording medium has a flexural rigidity EI of 5.9×10−8 to 1.3×10−7 N·m (6.0×10−4 to 1.3×10−3 g·cm). The flexural rigidity EI is determined by the following equation: EI=(π/4−2/π)·W·a3/d·b×9.8×10−5 (wherein W is a load that causes an annular test piece having a radius of a cm and a width of b cm which is prepared by cutting a magnetic sheet formed of the magnetic recording medium to undergo a radial displacement d of 0.2πa).
摘要翻译：磁记录介质包括厚度小于7μm，宽度为8mm的非磁性载体; 设置在所述非磁性载体的表面上的铁磁金属层; 以及设置在非磁性载体的另一个表面上的加强层。磁记录介质的抗弯刚度EI为5.9×10 -8〜1.3×10 -7 N.m（6.0×10 -4〜1.3×10 -3 g·cm）。弯曲刚度EI由以下等式确定：<？in-line-formula description =“In-line formula”end =“lead”？> EI =（pi / 4-2 / pi）.Wa3 / d .bx9.8x10-5 <？in-line-formula description =“In-line Formulas”end =“tail”？>（其中W是使半径为cm，宽度为 bcm，其通过切割由磁记录介质形成的磁片来进行径向位移d为0.2pia）。

6. 发明申请

US20060154114A1 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US20060154114A1
公开(公告)日：2006-07-13
申请号：US11329668
申请日：2006-01-11
申请人： Ichiro Kanagawa , Kazuhiko Suzuki , Ryoichi Hiratsuka , Hidetoshi Honda
发明人： Ichiro Kanagawa , Kazuhiko Suzuki , Ryoichi Hiratsuka , Hidetoshi Honda
IPC分类号： G11B5/64
CPC分类号： G11B5/738 , G11B5/70 , G11B5/72 , G11B5/7305
摘要： A magnetic recording medium includes a nonmagnetic support having a thickness less than 7 μm and a width of 8 mm; a ferromagnetic metal layer disposed on a surface of the nonmagnetic support; and a reinforcing layer disposed on the other surface of the nonmagnetic support. The magnetic recording medium has a flexural rigidity EI of 5.9×10−8 to 1.3×10−7 N·m (6.0×10−4 to 1.3×10−3 g·cm). The flexural rigidity EI is determined by the following equation: EI=(π/4−2/π)·W·a3/d·b×9.8×10−5(wherein W is a load that causes an annular test piece having a radius of a cm and a width of b cm which is prepared by cutting a magnetic sheet formed of the magnetic recording medium to undergo a radial displacement d of 0.2πa).
摘要翻译：磁记录介质包括厚度小于7μm，宽度为8mm的非磁性载体; 设置在所述非磁性载体的表面上的铁磁金属层; 以及设置在非磁性载体的另一个表面上的加强层。磁记录介质的抗弯刚度EI为5.9×10 -8至1.3×10 -7 Nm（6.0×10 -4至0.3×10 -3） SUP>-3μg）。弯曲刚度EI由以下等式确定：<？in-line-formula description =“In-line formula”end =“lead”？> EI =（pi / 4-2 / pi）.Wa 3 /d.bx9.8x10 <？in-line-formula description =“In-line Formulas”end =“tail”？>（其中W是导致通过切割由磁记录介质形成的磁片来进行0.2pia的径向位移d而制备的半径为cm，宽度为bcm的环形试片）。

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