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1. 发明授权

US10079036B2 Magnetic recording medium and magnetic recording and reproducing apparatus 有权
公开(公告)号：US10079036B2
公开(公告)日：2018-09-18
申请号：US15202674
申请日：2016-07-06
申请人： SHOWA DENKO K.K.
发明人： Satoru Nakamura , Taining Hung , Evance Kuo , Daizo Endo
IPC分类号： G11B5/65 , G11B5/725 , G11B5/72
CPC分类号： G11B5/725 , G11B5/72
摘要： A magnetic recording medium 11 in which the outermost surface of a protective layer 3 on a lubricant layer 4 side contains carbon and nitrogen of 10 atomic % to 90 atomic %, the lubricant layer 4 is formed by being in contact with the outermost surface, and contains a compound A of Formula (1) and a compound B of Formula (2), a mass ratio (A/B) of the compound A with respect to the compound B is 0.2 to 0.3, the average molecular weights of the compounds A and B are 1,500 to 2,000 and 1,300 to 2,400, respectively, and the average film thickness is 0.5 nm to 2 nm. R1-C6H4OCH2CH(OH)CH2OCH2—R2-CH2OCH2CH(OH)CH2OH (1) (R1 is an alkoxy group having 1 to 4 carbon atoms. R2 is —CF2O(CF2CF2O)x(CF2O)yCF2—). HOCH2CF2CF2O(CF2CF2CF2O)mCF2CF2CH2OCH2CH(OH)CH2OH (2)

2. 发明申请

US20180158472A1 HEAD HAVING WRAP-CONTROLLED FLEXIBLE MEDIA INTERFACE 审中-公开
公开(公告)号：US20180158472A1
公开(公告)日：2018-06-07
申请号：US15369651
申请日：2016-12-05
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn , Jason Liang , Calvin S. Lo
IPC分类号： G11B5/31 , G11B5/008 , G11B5/72 , G11B15/60
CPC分类号： G11B5/31 , G11B5/00813 , G11B5/187 , G11B5/29 , G11B5/4893 , G11B5/72 , G11B15/60 , G11B15/62
摘要： An apparatus according to one embodiment includes a module having a tape bearing surface, a magnetic transducer in a thin film region, and an edge closest to the transducers. A guide is positioned relative to the edge for inducing tenting of a moving magnetic recording tape above a tape tenting region of the tape bearing surface. The magnetic transducer is positioned along the tape tenting region.

3. 发明申请

US20180108375A1 MAGNETIC RECORDING MEDIUM 审中-公开
公开(公告)号：US20180108375A1
公开(公告)日：2018-04-19
申请号：US15561397
申请日：2016-02-08
申请人： Sony Corporation
发明人： Eiji NAKASHIO , Minoru YAMAGA , Jun TAKAHASHI
IPC分类号： G11B5/584 , G11B5/706 , G11B5/712 , G11B5/714 , G11B5/738 , H01F1/00 , H01F1/055 , H01F1/059
CPC分类号： G11B5/584 , G11B5/70615 , G11B5/70621 , G11B5/712 , G11B5/714 , G11B5/72 , G11B5/735 , G11B5/738 , H01F1/0054 , H01F1/0551 , H01F1/059
摘要： A magnetic recording medium includes a support, a recording layer, and a protective layer provided on at least one surface of the support and containing plate-shaped particle powder. The plate-shaped particle powder is stacked in an overlapping manner in a thickness direction of the protective layer such that main surfaces of plate-shaped particles face a surface of the support, and the plate-shaped particles have an average plate ratio of 60 or more.

4. 发明授权

US09704526B2 Glass substrate for magnetic disk and magnetic recording medium 有权
公开(公告)号：US09704526B2
公开(公告)日：2017-07-11
申请号：US14733174
申请日：2015-06-08
申请人： HOYA CORPORATION , HOYA GLASS DISK (THAILAND) LTD.
发明人： Kenichi Nishimori
IPC分类号： G11B5/73 , G11B5/82 , G11B5/72 , G11B5/725
CPC分类号： G11B5/7315 , G11B5/72 , G11B5/725 , G11B5/82 , Y10T428/1157
摘要： With regard to a glass substrate 1 according to the present invention, a value of an amendment concentricity AC that has taken into consideration Sk and/or Ku calculated from a shape profile over the whole circumference of an inside hole, or the skewness is within a predetermined range. The glass substrate for a magnetic recording medium can stably read servo information including track information stored on a magnetic disk when the glass substrate is used for an HDD.

5. 发明申请

US20170186457A1 GRAPHENE AS A PROTECTIVE OVERCOAT FOR MAGNETIC MEDIA WITHOUT THE USE OF A NUCLEATION LAYER 审中-公开
公开(公告)号：US20170186457A1
公开(公告)日：2017-06-29
申请号：US15301790
申请日：2015-04-07
申请人： National University of Singapore
发明人： Wah Lawrence Ng , Andreas Volker Stier , Iñigo Martin Fernandez , Barbaros Özyilmaz , Antonio Helio Castro Neto
IPC分类号： G11B5/725 , G11B5/851 , G11B5/84 , G11B5/85 , G11B5/82 , G11B5/72
CPC分类号： G11B5/725 , G11B5/10 , G11B5/255 , G11B5/3106 , G11B5/72 , G11B5/722 , G11B5/82 , G11B5/8408 , G11B5/85 , G11B5/851
摘要： A graphene layer, used as an anti-corrosive protection medium for magnetic media, overcomes the existing problem of reducing the carbon overcoat layer thickness for magnetic media. Unlike the amorphous carbon that is currently used as an anti-corrosion layer, the impenetrability of graphene to all known gaseous substances enables full corrosion protection of the underlying magnetic medium with a layer of graphene that may be, for example, as thin as a single layer of graphene. The dry transfer of graphene onto magnetic recording disks is enabled, such that the resulting interface of the graphene with the magnetic layer is protested from contact with impurities.

6. 发明授权

US09685185B2 Glass substrate for magnetic disk and magnetic recording medium 有权
公开(公告)号：US09685185B2
公开(公告)日：2017-06-20
申请号：US14733194
申请日：2015-06-08
申请人： HOYA CORPORATION , HOYA GLASS DISK (THAILAND) LTD.
发明人： Kenichi Nishimori
IPC分类号： G11B5/73 , G11B5/82 , G11B5/72 , G11B5/725
CPC分类号： G11B5/7315 , G11B5/72 , G11B5/725 , G11B5/82 , Y10T428/1157
摘要： With regard to a glass substrate 1 according to the present invention, a value of an amendment concentricity AC that has taken into consideration Sk and/or Ku calculated from a shape profile over the whole circumference of an inside hole, or the skewness is within a predetermined range. The glass substrate for a magnetic recording medium can stably read servo information including track information stored on a magnetic disk when the glass substrate is used for an HDD.

7. 发明授权

US09523020B2 Flattening film forming composition for hard disk 有权
标题翻译：扁平成型用硬质合金组合物
公开(公告)号：US09523020B2
公开(公告)日：2016-12-20
申请号：US14346465
申请日：2012-09-18
申请人： NISSAN CHEMICAL INDUSTRIES, LTD.
发明人： Taku Kato , Masayuki Haraguchi , Masaaki Ozawa
IPC分类号： C09D167/00 , C09D125/08 , C08F230/08 , G11B5/65 , G11B5/72 , G11B5/84
CPC分类号： C09D167/00 , C08F230/08 , C08K5/541 , C09D125/08 , G11B5/65 , G11B5/72 , G11B5/84 , G11B5/8404 , G11B5/8408 , C08L25/04 , C08L25/06 , C08L25/08 , C09D125/04
摘要： A flattening film forming composition for a hard disk that can prevent a magnetic material from migrating to the nonmagnetic layer, including a photopolymerizable coating material containing at least one polymer selected from a homopolymer that has a divinyl aromatic compound-derived unit structure and a copolymer having the unit structure or containing a mixture of the polymer and a photopolymerizable compound. The photopolymerizable compound may include an acrylate group, a methacrylate group, or a vinyl group. The polymer may be a copolymer further containing an addition polymerizable compound as a component to be copolymerized. A method for producing a hard disk, including: a first step of forming projections and recesses on a magnetic body; a second step of coating the projections and recesses with the flattening film forming composition; and a third step of flattening the coating by means of etching and exposing a surface of the magnetic body.
摘要翻译：一种用于硬盘的扁平成膜组合物，其可以防止磁性材料迁移到非磁性层，包括含有至少一种选自具有二乙烯基芳族化合物衍生的单元结构的均聚物的聚合物的可光聚合涂层材料和具有单元结构或含有聚合物和可光聚合化合物的混合物。光聚合性化合物可以包括丙烯酸酯基，甲基丙烯酸酯基或乙烯基。聚合物可以是进一步含有作为共聚成分的加成聚合性化合物的共聚物。一种制造硬盘的方法，包括：在磁体上形成突起和凹陷的第一步骤; 第二步骤，用平整膜形成组合物涂覆凸起和凹陷; 以及通过蚀刻来平坦化涂层并暴露磁体的表面的第三步骤。

8. 发明申请

US20160240219A1 MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS 审中-公开
标题翻译：磁记录介质，磁记录和再现设备
公开(公告)号：US20160240219A1
公开(公告)日：2016-08-18
申请号：US15044529
申请日：2016-02-16
申请人： SHOWA DENKO K.K.
发明人： Yoshihiko MARUYAMA , Selvaraj AANANDHA , Yuan Ai KHOO , Satoru NAKAMURA , Hiromitsu TANUMA , Eishin YAMAKAWA
IPC分类号： G11B5/725 , G11B5/64 , G11B5/09
CPC分类号： G11B5/725 , G11B5/72 , G11B5/82
摘要： A magnetic recording medium which is capable of effectively preventing a surface thereof from being contaminated, and is capable of preventing a contaminant thereon from adhering (being transferred) to a magnetic head, and a magnetic recording and reproducing apparatus including the magnetic recording medium are provided,A carbon protective layer of the magnetic recording medium is nitrided, and as a lubricant a compound A expressed by the following General Formula (1) and a compound B expressed by the following General Formula (2) are mixed and used. R1—C6H4OCH2CH(OH)CH2OCH2—R2—CH2OCH2CH(OH)CH2OH (1) CH2(OH)CH(OH)CH2OCH2CF2CF2(OCF2CF2CF2)mOCF2CF2CH2OCH2CH(OH)CH2OH (2)
摘要翻译：能够有效地防止其表面被污染并能够防止其上的污染物粘附（转印）到磁头的磁记录介质，并且提供包括磁记录介质的磁记录和再现装置将磁记录介质的碳保护层氮化，作为润滑剂混合使用由以下通式（1）表示的化合物A和由以下通式（2）表示的化合物B. （OH）CH 2 OH（2）R 1 -C 6 H 4 OCH 3 CH（OH）CH 2 OCH 2 -CH 2 OH（1）CH 2（OH）CH（OH）CH 2 OCH 2 CF 2 CF 2（OCF 2 CF 2 CF 2）

9. 发明授权

US09355669B2 Perpendicularly magnetized thin film structure and method for manufacturing the same 有权
标题翻译：垂直磁化薄膜结构及其制造方法
公开(公告)号：US09355669B2
公开(公告)日：2016-05-31
申请号：US13678856
申请日：2012-11-16
申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
发明人： Gyung Min Choi , Byoung Chul Min , Kyung Ho Shin
IPC分类号： H01L43/10 , H01F10/32 , G11B5/64 , G11B5/72 , G11B5/66 , G11B5/84 , H01F10/12 , H01F41/32 , G11B5/65 , H01L43/12
CPC分类号： G11B5/645 , G11B5/65 , G11B5/66 , G11B5/72 , G11B5/84 , H01F10/123 , H01F10/3254 , H01F10/3286 , H01F41/32 , H01L43/10 , H01L43/12
摘要： A perpendicularly magnetized thin film structure and a method of manufacturing the perpendicularly magnetized thin film structure are provided. The perpendicularly magnetized thin film structure includes i) a base layer, ii) a magnetic layer located on the base layer and having an L10-crystalline structure, and iii) a metal oxide layer located on the magnetic layer.
摘要翻译：提供垂直磁化的薄膜结构和制造垂直磁化的薄膜结构的方法。垂直磁化的薄膜结构包括：i）基底层，ii）位于基底层上并具有L10结晶结构的磁性层，和iii）位于磁性层上的金属氧化物层。

10. 发明申请

US20150325263A1 SLIDER AND/OR HARD DISC INCLUDING COATING, AND OPTIONALLY ONE OR MORE ADDITIVES THAT CAN DISSIPATE ELECTRICAL CHARGE 有权
标题翻译：滑盖和/或硬盘包括涂料，以及可选择的一种或多种可以分离电荷的添加剂
公开(公告)号：US20150325263A1
公开(公告)日：2015-11-12
申请号：US14704731
申请日：2015-05-05
申请人： Seagate Technology LLC
发明人： Tim Stoebe , Dan Olson
IPC分类号： G11B5/72 , G11B5/725 , G11B5/60
CPC分类号： G11B5/60 , G11B5/6082 , G11B5/6094 , G11B5/72 , G11B5/725
摘要： The present disclosure relates to reducing a potential difference among a slider body and a hard disc drive platter by providing a hard disc drive platter and/or slider body with a coating that includes one or more additives that can dissipate electrical charge.
摘要翻译：本公开涉及通过提供具有包括一种或多种能够耗散电荷的添加剂的涂层的硬盘驱动盘和/或滑块体来减小滑块体和硬盘驱动盘之间的电位差。

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