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1. 发明申请

US20180233167A1 SYSTEMS AND METHODS FOR APPLYING ELECTRIC FIELDS DURING ULTRAVIOLET EXPOSURE OF LUBRICANT LAYERS FOR HARD DISK MEDIA 审中-公开
公开(公告)号：US20180233167A1
公开(公告)日：2018-08-16
申请号：US15951945
申请日：2018-04-12
申请人： WD Media, LLC , Kansai University
发明人： Yasuo Sakane , Hiroshi Tani
IPC分类号： G11B5/40 , C23C16/00 , C23C16/458
CPC分类号： G11B5/40 , C23C16/00 , C23C16/458 , G11B5/8408
摘要： Systems and methods for applying electric fields during ultraviolet exposure of lubricant layers for hard disk media. One such method involves inserting a magnetic medium into a chamber, the magnetic medium including a lubricant on an outer surface thereof, and applying an electric field and an ultraviolet radiation to the lubricant within the chamber. Another such method involves inserting a magnetic medium into a chamber, depositing a lubricant on the medium within the chamber, and applying an electric field and an ultraviolet radiation to the lubricant within the chamber.

2. 发明授权

US09984716B1 Magnetic tape device and head tracking servo method 有权
公开(公告)号：US09984716B1
公开(公告)日：2018-05-29
申请号：US15854507
申请日：2017-12-26
申请人： FUJIFILM Corporation
发明人： Tetsuya Kaneko , Norihito Kasada , Eiki Ozawa
IPC分类号： G11B5/84 , G11B5/39 , G11B5/725 , G11B5/71
CPC分类号： G11B5/84 , G11B5/3909 , G11B5/70 , G11B5/71 , G11B5/725 , G11B5/8408
摘要： The magnetic tape device includes: a magnetic tape; and a servo head, in which a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec, the servo head is a TMR head, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, the magnetic layer includes a servo pattern, the magnetic layer includes one or more components selected from the group consisting of fatty acid and fatty acid amide, and a C—H derived C concentration calculated from a C—H peak area ratio of C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is 45 to 65 atom %.

3. 发明授权

US09765273B2 Monodisperse lubricant including multidentate perfluoropolyether structures 有权
公开(公告)号：US09765273B2
公开(公告)日：2017-09-19
申请号：US14480552
申请日：2014-09-08
申请人： Western Digital Technologies, Inc.
发明人： Nicholas R. Conley , Xueqian Kong , Bruno Marchon
IPC分类号： C10M107/38 , G11B5/725 , G11B5/84
CPC分类号： C10M107/38 , C10M2213/043 , C10N2220/03 , C10N2240/204 , G11B5/725 , G11B5/8408
摘要： In one embodiment, a method for forming a substantially monodisperse lubricant includes: providing a plurality of perfluoropolyether (PFPE) precursors, each PFPE precursor including two end segments and a PFPE backbone disposed therebetween; protecting one of the end segments of each PFPE precursor with one or more protecting agents to form a plurality of mono-protected PFPE precursors, each mono-protected PFPE precursor including a protected end segment and an unprotected end segment; and coupling the unprotected end segment of each of the mono-protected PFPE precursors to the unprotected end segment of another of the mono-protected PFPE precursors via a coupling agent to form multidentate PFPE structures. In another embodiment, a substantially monodisperse lubricant includes a plurality of multidentate perfluoropolyether (PFPE) structures, each multidentate PFPE structure including at least two end segments and a middle segment therebetween, wherein the multidentate PFPE structures have a molecular weight that is substantially the same.

4. 发明申请

US20170243610A1 ULTRA-THIN CORROSION RESISTANT HARD OVERCOAT FOR HARD DISK MEDIA 审中-公开
公开(公告)号：US20170243610A1
公开(公告)日：2017-08-24
申请号：US15437375
申请日：2017-02-20
申请人： Intevac, Inc.
发明人： Terry Bluck
IPC分类号： G11B5/72 , G11B5/851 , H01J37/317 , G11B5/84
CPC分类号： G11B5/722 , G11B5/8408 , G11B5/851 , H01J37/3171 , H01J37/3178 , H01J37/32357 , H01J37/32412 , H01J2237/31701 , H01J2237/31705
摘要： A magnetic media disk is fabricated by depositing magnetic layers over the disk, then depositing protective later over the magnetic layer, and then performing ion implant process to implant ions into the protective coating. A system for performing the ion implant of the magnetic media disk includes two ion implant chambers. During operation one chamber performs ion implant and one chamber performs chamber cleaning by maintaining inside a plasma of cleaning gas without a disk present inside the chamber.

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

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。

7. 发明申请

US20160260452A1 LOW PROFILE MULTIDENTATE LUBRICANTS FOR USE AT SUB-NANOMETER THICKNESSES IN MAGNETIC MEDIA 审中-公开
标题翻译：低磁性多用途润滑剂用于磁性介质中亚纳米厚度
公开(公告)号：US20160260452A1
公开(公告)日：2016-09-08
申请号：US15157315
申请日：2016-05-17
申请人： HGST Netherlands B.V.
发明人： Bala K. Pathem
IPC分类号： G11B5/725 , C10M107/44 , C10M107/48 , C10M107/38
CPC分类号： G11B5/725 , C10M105/58 , C10M105/70 , C10M107/38 , C10M107/44 , C10M107/48 , C10M145/24 , C10M2213/043 , C10M2213/0613 , C10M2215/023 , C10M2215/2206 , C10M2217/0403 , C10M2223/083 , C10M2225/0405 , C10N2040/14 , C10N2050/08 , C10N2230/56 , C10N2240/204 , C10N2250/08 , G11B5/8408
摘要： In one embodiment, a multidentate perfluoropolyether (PFPE) lubricant has the formula Se-So-Si-SL-Si-So-Se, where each So includes at least one perfluoroethyl ether unit, SL is a linker segment, and each Se and Si include at least one functional group configured to attach to a surface. In another embodiment, a multi dentate PFPE lubricant has the formula Se-So(a)-Si-Sm-Si-So(b)-Se, where each So(a), So(b), and Sm include at least one perfluoroethyl ether unit with the proviso that Sm has a different number of perfluoroethyl ether units than at least one of So(a) and So(b), and each Se and Si include at least one functional group configured to attach to a surface.
摘要翻译：在一个实施方案中，多齿全氟聚醚（PFPE）润滑剂具有式Se-So-Si-SL-Si-So-Se，其中每个So包括至少一个全氟乙基醚单元，SL是连接体部分，并且每个Se和Si 包括配置成附着到表面的至少一个功能组。在另一个实施方案中，多齿PFPE润滑剂具有式Se-So（a）-Si-Sm-Si-So（b）-Se，其中每个So（a），So（b）和Sm包括至少一个全氟乙醚单元，条件是Sm具有与So（a）和So（b）中的至少一种不同数量的全氟乙醚单元，并且每个Se和Si包括至少一个被配置为附着到表面上的官能团。

8. 发明授权

US09324355B2 Pattern formation method, stamper manufacturing method, and magnetic recording medium manufacturing method 有权
标题翻译：图案形成方法，压模制造方法和磁记录介质制造方法
公开(公告)号：US09324355B2
公开(公告)日：2016-04-26
申请号：US14206271
申请日：2014-03-12
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Kazutaka Takizawa , Takeshi Iwasaki , Akihiko Takeo
IPC分类号： B44C1/22 , C03C15/00 , C03C25/68 , C23F1/00 , G11B5/84 , C25D1/10 , H01L21/3065 , H01L21/263 , H01L21/311 , G03F1/00 , G03F7/00 , G11B5/855
CPC分类号： G11B5/8408 , C25D1/10 , G03F1/00 , G03F7/00 , G11B5/855 , H01L21/263 , H01L21/2633 , H01L21/3065 , H01L21/311 , H01L21/31116
摘要： According to one embodiment, a pattern formation method includes steps of forming a layer to be processed on a substrate, forming a metal microparticle layer by coating the layer to be processed with a metal microparticle coating solution containing metal microparticles and a solvent, reducing a protective group amount around the metal microparticles by first etching, forming a protective layer by exposing the substrate to a gas containing C and F and adsorbing the gas around the metal microparticles to obtain a projection pattern, and transferring the projection pattern to the layer to be processed by second etching.
摘要翻译：根据一个实施例，图案形成方法包括以下步骤：在基板上形成待加工层，通过用含有金属微粒和溶剂的金属微粒涂层溶液涂覆待加工层来形成金属微粒层，减少保护通过首先蚀刻金属微粒周围的金属组合，通过将基板暴露于含有C和F的气体并吸附金属微粒周围的气体以形成保护层，从而获得突起图案，并将投影图案转印到待处理层通过第二次蚀刻。

9. 发明申请

US20160068778A1 MONODISPERSE LUBRICANT INCLUDING MULTIDENTATE PERFLUOROPOLYETHER STRUCTURES 有权
标题翻译：单体润滑剂，包括多元醇全氟聚醚结构
公开(公告)号：US20160068778A1
公开(公告)日：2016-03-10
申请号：US14480552
申请日：2014-09-08
申请人： HGST Netherlands B.V.
发明人： Nicholas R. Conley , Xueqian Kong , Bruno Marchon
IPC分类号： C10M107/38 , G11B5/725 , G11B5/84
CPC分类号： C10M107/38 , C10M2213/043 , C10N2220/03 , C10N2240/204 , G11B5/725 , G11B5/8408
摘要： In one embodiment, a method for forming a substantially monodisperse lubricant includes: providing a plurality of perfluoropolyether (PFPE) precursors, each PFPE precursor including two end segments and a PFPE backbone disposed therebetween; protecting one of the end segments of each PFPE precursor with one or more protecting agents to form a plurality of mono-protected PFPE precursors, each mono-protected PFPE precursor including a protected end segment and an unprotected end segment; and coupling the unprotected end segment of each of the mono-protected PFPE precursors to the unprotected end segment of another of the mono-protected PFPE precursors via a coupling agent to form multidentate PFPE structures. In another embodiment, a substantially monodisperse lubricant includes a plurality of multidentate perfluoropolyether (PFPE) structures, each multidentate PFPE structure including at least two end segments and a middle segment therebetween, wherein the multidentate PFPE structures have a molecular weight that is substantially the same.
摘要翻译：在一个实施方案中，用于形成基本上单分散润滑剂的方法包括：提供多个全氟聚醚（PFPE）前体，每个PFPE前体包括两个末端部分和设置在其间的PFPE骨架; 用一种或多种保护剂保护每个PFPE前体中的一个末端部分以形成多个单保护的PFPE前体，每个单保护的PFPE前体包括被保护的末端部分和未受保护的末端部分; 并且通过偶联剂将每个单保护PFPE前体的未保护端段与另一个单保护PFPE前体的未保护末端部分偶联以形成多齿PFPE结构。在另一个实施方案中，基本上单分散润滑剂包括多个多齿全氟聚醚（PFPE）结构，每个多齿PFPE结构包括至少两个末端段和其间的中间段，其中多齿PFPE结构具有基本上相同的分子量。

10. 发明授权

US09245568B2 Magnetic disk and method of manufacturing the same 有权
标题翻译：磁盘及其制造方法
公开(公告)号：US09245568B2
公开(公告)日：2016-01-26
申请号：US12744611
申请日：2009-03-27
申请人： Kae Itoh , Katsushi Hamakubo
发明人： Kae Itoh , Katsushi Hamakubo
IPC分类号： G11B5/65 , G11B5/84 , C10M105/54 , C10M107/38 , G11B5/725
CPC分类号： G11B5/8408 , C10M105/54 , C10M107/38 , C10M2213/043 , C10M2213/06 , C10M2213/0606 , C10N2220/021 , C10N2230/06 , C10N2240/204 , G11B5/725
摘要： Disclosed is a magnetic disk that has excellent durability, particularly excellent LUL durability, and excellent alumina resistance and has a high level of reliability under a low flying height of a magnetic head involved in a recent tendency toward a rapid increase in recording density and a very severe environment resistance requirement due to diversified applications. A magnetic disk (10) comprises a substrate (1) and at least a magnetic layer (6), a carbon-based protective layer (7), and a lubricating layer (8) provided in that order over the substrate (1). The lubricating layer (8) contains a compound that has a perfluoropolyether main chain in the structure thereof and has an aromatic group and a polar group at the end of the molecule.
摘要翻译：公开了一种具有优异的耐久性，特别优异的LUL耐久性和优异的耐氧化铝性的磁盘，并且在磁头的低飞行高度下具有高水平的可靠性，该磁头涉及最近的记录密度快速增加的趋势，由于应用多样化，严重的环境阻力要求。磁盘（10）包括基板（1）和至少一个磁性层（6），碳基保护层（7）和在基板（1）上依次设置的润滑层）。润滑层（8）含有在其结构中具有全氟聚醚主链，在分子末端具有芳基和极性基团的化合物。

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