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1. 发明专利

JP2011138563A Magnetic recording medium and magnetic recording and reproducing device 审中-公开
标题翻译：磁记录介质和磁记录和再现装置
公开(公告)号：JP2011138563A
公开(公告)日：2011-07-14
申请号：JP2009296083
申请日：2009-12-25
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/738 , G11B5/65
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which comprises an orientation control layer in which a dome-like projection is formed on the top part of a columnar crystal and which obtains improved recording characteristics (OW) suitable for high-density recording. SOLUTION: The magnetic recording medium is obtained by laminating, on a nonmagnetic substrate, at least: a soft magnetic substrate layer; the orientation control layer 3 which controls the orientation of the just above layer; and a perpendicular magnetic layer 4 where the axis of easy magnetization is orientated mainly perpendicularly to the nonmagnetic substrate. The orientation control layer 3 includes a laminated structure obtained by plurally laminating: magnetic layers containing magnetic material and having a thickness of 0.2 to 1.0 nm; and Ru layers having a thickness of 0.2 to 1.0 nm and containing Ru of 50 at% or more. The magnetic material is Co or Fe, and the saturated magnetization of the laminated structure is 50 emu/cc or more. The perpendicular magnetic layer 4 includes the columnar crystal continuous in the thickness direction with crystal grains constituting the orientation control layer 3. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种磁记录介质，其包括在柱状晶体的顶部上形成圆顶状突起的取向控制层，并且其获得适于高分辨率的改进的记录特性（OW）密度记录。解决方案：磁记录介质通过至少在非磁性衬底上层压软磁性基底层而获得; 控制刚好上层的取向的取向控制层3; 以及易磁化轴主要垂直于非磁性基板取向的垂直磁性层4。取向控制层3包括通过多层叠获得的层叠结构：包含磁性材料的磁性层，其厚度为0.2至1.0nm; 和Ru层，其厚度为0.2〜1.0nm，Ru含量为50原子％以上。磁性材料为Co或Fe，层压结构的饱和磁化强度为50emu / cc以上。垂直磁性层4包括在构成取向控制层3的晶粒的厚度方向上连续的柱状晶体。（C）2011，JPO＆INPIT

2. 发明专利

JP2011086356A Magnetic recording medium and magnetic recording and playback device 有权
标题翻译：磁记录介质和磁记录和回放装置
公开(公告)号：JP2011086356A
公开(公告)日：2011-04-28
申请号：JP2009240288
申请日：2009-10-19
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/738 , G11B5/65
CPC分类号： G11B5/7325 , G11B5/667
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium having excellent OW (Over Write) characteristics by maintaining an effect of controlling nuclear generation of an intermediate layer while increasing Ms of an underlayer. SOLUTION: The perpendicular magnetic recording medium includes a backing layer, an underlayer, an intermediate layer and a perpendicular magnetic recording layer, which are sequentially layered on at least a nonmagnetic substrate. The backing layer is made of a soft magnetic film having an amorphous structure. The underlayer includes NiW alloy containing at least one or both of Co and Fe. The NiW alloy has a W content of 3 to 10 at%, and a total content of Co and Fe of ≥5 to 3 . The underlayer has 2 to 20 nm thickness. The intermediate layer includes Ru or Ru alloy. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有优异的OW（过写）特性的垂直磁记录介质，通过保持控制中间层的核生成的效果，同时增加底层的Ms。解决方案：垂直磁记录介质包括背衬层，底层，中间层和垂直磁记录层，其顺序地层叠在至少一个非磁性基板上。背衬层由具有非晶结构的软磁膜制成。底层包括含有Co和Fe中至少一种或两种的NiW合金。 NiW合金的W含量为3〜10原子％，Co和Fe的总含量≥5〜40at％。 NiW合金具有≥280emu/ cm 3的饱和磁通密度Ms 。底层的厚度为2〜20nm。中间层包括Ru或Ru合金。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2011123977A Magnetic recording medium and magnetic recording and reproducing device 审中-公开
标题翻译：磁记录介质和磁记录和再现装置
公开(公告)号：JP2011123977A
公开(公告)日：2011-06-23
申请号：JP2009283112
申请日：2009-12-14
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/738 , G11B5/65 , G11B5/667
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which has an orientation control layer having a dome-shaped convex part formed on the tops of columnar crystals, and which provides sufficiently high recording properties (OW) suitable for high-density recording. SOLUTION: The magnetic recording medium is obtained by laminating on a nonmagnetic substrate at least: a soft magnetic underlayer; an orientation control layer 3 which controls the orientation of the layer right above the same; a vertical magnetic layer 4 including an axis of easy magnetization vertically oriented mainly to the nonmagnetic substrate. The orientation control layer 3 contains an Ru alloy layer containing magnetic material and having 50 emu/cc or more saturated magnetization. The vertical magnetic layer 4 contains the columnar crystals S3 consecutive in the thickness direction as well as the crystal grains constituting the orientation control layer 3. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种磁记录介质，其具有形成在柱状晶体顶部的具有圆顶形凸部的取向控制层，并且提供足够高的适用于高密度的记录性能（OW）记录。解决方案：磁记录介质是通过至少在非磁性基底上层叠软磁性底层获得的; 方向控制层3，其控制正好在其上方的层的取向; 垂直磁性层4，其包括主要垂直于非磁性基底的易磁化轴。取向控制层3含有含有磁性材料并具有50emu / cc以上的饱和磁化强度的Ru合金层。垂直磁性层4包含在厚度方向上连续的柱状晶体S3以及构成取向控制层3的晶粒。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2010262719A Magnetic recording medium and magnetic recording and playback device 审中-公开
标题翻译：磁记录介质和磁记录和回放装置
公开(公告)号：JP2010262719A
公开(公告)日：2010-11-18
申请号：JP2009114530
申请日：2009-05-11
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/66 , G11B5/64 , G11B5/65 , H01F10/30
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium, capable of greatly improving the S/N ratio, and enabling higher recording density by improving heat fluctuation characteristics and recording characteristics.
SOLUTION: At least on a nonmagnetic substrate, the magnetic recording medium has the lamination of a soft magnetic underlay layer, an orientation control layer for controlling the orientation of a layer disposed just thereon, and a perpendicular magnetic layer 4 whose axis of easy magnetization is oriented mainly perpendicular to the nonmagnetic substrate. The perpendicular magnetic layer 4 is configured of two or more layers of magnetic layers 4a, 4b, and an alloy layer 7 including Fe and a nonmagnetic material is disposed between the magnetic layers 4a, 4b.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供能够大大提高S / N比的磁记录介质，并且通过改善热波动特性和记录特性来实现更高的记录密度。解决方案：至少在非磁性基板上，磁记录介质具有软磁性底层的层叠，用于控制刚刚在其上设置的层的取向的取向控制层和垂直磁性层4，容易磁化主要是垂直于非磁性基片。垂直磁性层4由两层或多层磁性层4a，4b构成，并且包含Fe和非磁性材料的合金层7设置在磁性层4a，4b之间。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2010118115A Method of forming magnetic layer, magnetic recording medium, and magnetic recording and playback device 有权
标题翻译：形成磁层，磁记录介质，磁记录和回放装置的方法
公开(公告)号：JP2010118115A
公开(公告)日：2010-05-27
申请号：JP2008291031
申请日：2008-11-13
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/851 , C23C14/08 , C23C14/34 , G11B5/65 , G11B5/82
CPC分类号： G11B5/851 , C23C14/0036 , C23C14/0688 , C23C14/3492 , G11B5/65 , H01F41/18
摘要： PROBLEM TO BE SOLVED: To provide a method of forming a magnetic layer having stable magnetic characteristics and recording and playback characteristics by improving uniformity of oxygen radical concentration distribution to make uniform the concentration of oxygen taken in the magnetic layer in an in-plane direction, in reactive sputtering.
SOLUTION: In the method of forming the magnetic layer formed by reactive sputtering, a substrate is disposed in a reaction vessel, a pair of electrode units each comprising a sputter electrode and a target disposed on the surface of the sputter electrode and including chromium except for the oxide thereof are disposed to face both the surfaces of the substrate and so that the targets are disposed on the substrate side, a mixed gas of argon and water is supplied to portions near the surfaces on the substrate side of the pair of electrode units and chromium except the oxide included in the targets is formed as a chromium oxide included in the magnetic layer having a granular structure by reactive sputtering.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过提高氧自由基浓度分布的均匀性来形成具有稳定的磁特性和记录和回放特性的磁性层的方法，以使得在磁性层中的氧气浓度均匀，平面方向，反应溅射。解决方案：在形成通过反应溅射形成的磁性层的方法中，将基板设置在反应容器中，一对电极单元，每个电极单元包括设置在溅射电极的表面上的溅射电极和靶，并且包括除了其氧化物以外的铬被设置为面对基板的两个表面，并且靶材设置在基板侧，将氩和水的混合气体供应到该对的基板侧的表面附近的部分包含在目标物中的除了氧化物之外的电极单元和铬通过反应溅射形成为具有粒状结构的磁性层中的氧化铬。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2010118091A Method of manufacturing magnetic recording medium, and magnetic recording and playback device 审中-公开
标题翻译：制造磁记录介质的方法和磁记录和回放装置
公开(公告)号：JP2010118091A
公开(公告)日：2010-05-27
申请号：JP2008288676
申请日：2008-11-11
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/84 , G11B5/65 , G11B5/738 , G11B5/851
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a magnetic recording medium for maintaining high vertical alignment of a perpendicular magnetic layer. SOLUTION: The magnetic recording medium is formed by layering at least a soft magnetic underlayer, an alignment control layer 11 controlling alignment of a layer directly above, and a perpendicular magnetic layer whose magnetization easy axis is oriented mainly perpendicularly to a non-magnetic substrate on the non-magnetic substrate. In the method of the magnetic recording medium, the perpendicular magnetic layer is constituted of two or more magnetic layers 12 to 14 and surface roughness (R max ) of the layer positioned below the layers where crystals are grown is set in the range of 2 to 4.5 nm when the crystals of each layer are grown so that crystal grains which constitute the magnetic layers 12 to 14 form continuous columnar crystals S1 to S3 in the thickness direction together with the crystal grains of the alignment control layer 11. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于维持垂直磁性层的高垂直取向的磁记录介质的制造方法。解决方案：磁记录介质通过至少层叠软磁性底层，对准控制层11，其控制直接在其上的层的取向，以及垂直磁性层，其磁化容易轴主要垂直于非磁性层，非磁性基板上的磁性基板。在磁记录介质的方法中，垂直磁性层由两个或多个磁性层12至14构成，并且位于晶体生长层的下方的层的表面粗糙度（R SB max max）是设定为2〜4.5nm的范围，使得各层的晶体生长使得构成磁性层12〜14的晶粒与取向控制层的晶粒一起形成厚度方向的连续柱状晶体S1〜S3 11.版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2011123976A Method for manufacturing magnetic recording medium and magnetic recording and reproducing device 审中-公开
标题翻译：制造磁记录介质和磁记录和再现装置的方法
公开(公告)号：JP2011123976A
公开(公告)日：2011-06-23
申请号：JP2009283111
申请日：2009-12-14
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/851 , G11B5/673 , G11B5/852
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which increases recording density while ensuring high reliability. SOLUTION: A method for manufacturing includes the steps of: generating a low-gas pressure layer 3a having a thickness of 8 to 12 nm and made of Ru or a material including Ru as a main component, within the range of 0.6 to 1.2 Pa sputtering gas pressure; and generating, on the low gas pressure layer 3a, a high-gas pressure layer 3b which has a thickness not larger than that of the low-gas pressure layer 3a, in the range of 4 to 12 nm, and which has a granular structure made of a material containing Ru as a main component and containing at least one kind of oxides among SiO 2 , Cr 2 O 3 , WO 2 , Al 2 O 3 , TiO 2 , and Ta 2 O 5 in total within the range of 0.5 to 3 mol%, within the range of 4 to 12 Pa sputtering gas pressure. The step of laminating a vertical magnetic layer 4 includes growing crystal grain so as to generate columnar crystals S1, S2, and S3 consecutive in the thickness direction with the crystal grains constituting an orientation control layer 3. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种提高记录密度同时确保高可靠性的磁记录介质。解决方案：一种制造方法包括以下步骤：产生厚度为8至12nm的由Ru制成的低气压层3a或包含Ru作为主要成分的材料，其范围为0.6至 1.2 Pa溅射气压; 在低气压层3a上产生厚度不大于低气压层3a的高气压层3b，范围为4〜12nm，具有粒状结构由含有Ru作为主要成分的材料制成，并且在SiO 2 ，Cr 2 3 中含有至少一种氧化物， SB> 2 ，Al 2 3 ，TiO 2 和Ta 2 5 在0.5〜3摩尔％的范围内，在4〜12Pa的溅射气体压力的范围内。层叠垂直磁性层4的步骤包括生长晶粒，以便产生在构成取向控制层3的晶粒的厚度方向上连续的柱状晶体S1，S2和S3。版权所有（C）2011 ，JPO＆INPIT

8. 发明专利

JP2010211861A Magnetic recording medium and magnetic recording and reproducing device 审中-公开
标题翻译：磁记录介质和磁记录和再现装置
公开(公告)号：JP2010211861A
公开(公告)日：2010-09-24
申请号：JP2009056778
申请日：2009-03-10
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： TANAKA TAKASHI
IPC分类号： G11B5/667
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium that significantly improves an S/N ratio, and further increases recording density by improving thermal fluctuation characteristics and recording characteristics.
SOLUTION: In the magnetic recording medium constituted by laminating at least a soft magnetic underlayer, an orientation control layer to control orientation of the layer directly above, and a vertical magnetic layer 4 having an easy axis of magnetization mainly oriented vertical to a non-magnetic substrate on the non-magnetic substrate, the vertical magnetic layer 4 is composed of two or more magnetic layers 4a, 4b, a non-magnetic layer 7 is disposed between the magnetic layers 4a and 4b, and furthermore, an Fe or Fe alloy layer 9a, 9b are disposed in contact with the non-magnetic layer 7.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供显着提高S / N比的磁记录介质，并且通过改善热波动特性和记录特性来进一步提高记录密度。解决方案：在通过层叠至少软磁性底层，定向控制层以直接控制上面的层的取向控制层和垂直磁性层4构成的磁记录介质中，垂直磁性层4具有易磁化轴，主要垂直于在非磁性基板上的非磁性基板，垂直磁性层4由两个或更多个磁性层4a，4b构成，非磁性层7设置在磁性层4a和4b之间，此外，Fe或 Fe合金层9a，9b设置成与非磁性层7接触。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2752915B2 失效
公开(公告)号：JP2752915B2
公开(公告)日：1998-05-18
申请号：JP6445395
申请日：1995-03-23
申请人： SHOWA DENKO KK , SUMITOMO DENKI KOGYO KK
发明人： SASAI KUNIHIRO , KOTANI TERUMITSU , TANAKA TAKASHI , SAITO KOJI , SATANI HIROSHI
IPC分类号： G02B6/44 , C08L23/00 , C08L23/04

10. 发明专利

JPH07333476A SPACER FOR OPTICAL FIBER CABLE AND POLYETHYLENE RESIN TO BE USED FOR THE SAME 失效
公开(公告)号：JPH07333476A
公开(公告)日：1995-12-22
申请号：JP6445395
申请日：1995-03-23
申请人： SHOWA DENKO KK , SUMITOMO ELECTRIC INDUSTRIES
发明人： SASAI KUNIHIRO , KOTANI TERUMITSU , TANAKA TAKASHI , SAITO KOJI , SATANI HIROSHI
IPC分类号： G02B6/44 , C08L23/00 , C08L23/04
摘要： PURPOSE:To provide a polyethylene(PE) resin to be used for a spacer for an optical fiber cable having good physical properties and moldability and further, good dimensional controllability and the spacer for the optical fiber cable which is formed by using this resin, maintains small roughness of the surface, does not impair the transmission characteristics of optical fibers and has excellent mechanical characteristics. CONSTITUTION:The PE resin 2 to be used for the spacer 10 for the optical fiber cable provided with spiral grooves for housing the optical fibers 5 on its outer periphery is the PE resin 2 having a melt index >=0.01 to =0.941 to and fluid ratio (HLMI/MLMI) 20 to 55. The center line average roughness of the spacer produced by using the resin 2 is

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