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1. 发明公开

EP1395983A1 FLUORINATED KETONES AS LUBRICANT DEPOSITION SOLVENTS FOR MAGNETIC MEDIA APPLICATIONS 审中-公开
标题翻译：氟化酮ALS润滑脂存款溶剂磁介质应用
公开(公告)号：EP1395983A1
公开(公告)日：2004-03-10
申请号：EP02706103.5
申请日：2002-02-01
申请人： 3M Innovative Properties Company
发明人： PARENT, Michael, J. , KEHREN, Jason, M. , MINDAY, Richard, M.
IPC分类号： G11B5/71 , G11B5/72 , C10M107/38 , C10M169/04
CPC分类号： G11B5/71 , C10M107/38 , C10M169/041 , C10M2211/042 , C10M2211/0425 , C10M2211/063 , C10M2213/04 , C10M2213/06 , C10M2223/08 , C10N2240/204 , C10N2250/121 , G11B5/725
摘要： A lubricant composition comprising a perfluoropolyether lubricant and fluorinated ketone solvent is described. The lubricant composition can be applied as a coating to a substrate such as magnetic media. After the coating dries, a thin uniform lubricant film covers the substrate surface. The fluorinated ketone solvent can solubilize a wide range of perfluoropolyether compounds but not potential contaminants such as water and hydrocarbons. Additionally, the solvent has low potential to adversely affect global warming.

2. 发明公开

EP0982714A1 Magnetic Disk 审中-公开
标题翻译： Magnetplatte
公开(公告)号：EP0982714A1
公开(公告)日：2000-03-01
申请号：EP99116701.6
申请日：1999-08-25
申请人： TDK Corporation
发明人： Sasaki, Hideki , Nagashima, Naoyuki , Uchida, Masatoshi
IPC分类号： G11B5/71 , G11B5/738
CPC分类号： G11B5/738 , G11B5/71
摘要： A magnetic disk (1) of the present invention has a magnetic layer (31) via a non-magnetic underlayer (21) on a flexible non-magnetic support (10), wherein the magnetic layer and the non-magnetic underlayer do not include any fatty acid as a lubricant; the non-magnetic underlayer includes carbon black as a non-magnetic powder and a fatty ester A represented by a specific structural formula in which an alcohol component is an iso-compound and a fatty ester B represented by a specific structural formula comprising a lower alcohol with 5 or less carbon atoms as the lubricants; the contents of the fatty ester A and the fatty ester B, and a BET method and the content of carbon black are set in predetermined ranges, respectively, whereby the clogging of a head can be prevented, sticking does not occur, and durability can be remarkably improved.
摘要翻译：本发明的磁盘（1）在柔性非磁性支撑（10）上经由非磁性底层（21）具有磁性层（31），其中磁性层和非磁性底层不包括任何脂肪酸作为润滑剂; 非磁性底层包括作为非磁性粉末的炭黑和由特定结构式表示的脂肪酯A，其中醇组分是异构化合物，和脂肪酯B由特定结构式表示，其包含低级醇具有5个或更少的碳原子作为润滑剂; 脂肪酯A和脂肪酯B的含量以及BET法和炭黑的含量分别设定在预定范围内，从而可以防止头部的堵塞，不会发生粘附，耐久性可以显着改善。

3. 发明公开

EP0962919A4 EP0962919A4 - 失效
标题翻译： EP0962919A4 - Google专利
公开(公告)号：EP0962919A4
公开(公告)日：1999-12-29
申请号：EP98901572
申请日：1998-02-10
IPC分类号： G11B5/70 , G11B5/71 , G11B5/714 , G11B5/706
CPC分类号： G11B5/71 , G11B5/70 , G11B5/714 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium which has a substantially nonmagnetic lower layer and a magnetic layer which is made of ferromagnetic metal powder or ferromagnetic hexagonal ferrite powder dispersed in a binder formed in this order on a support. (1) The magnetic recording medium having a surface recording density of 0.17 - 2 Gbit/inch is characterized in that the coercive force of the magnetic layer is not less than 1800 Oe, and the average major axis length of the ferromagnetic metal powder is not larger than 0.15 mu m, or the average particle diameter of the ferromagnetic hexagonal ferrite powder is not larger than 0.10 mu m. And (2) the magnetic recording medium having a surface recording density of 0.17 - 2 Gbit/inch is characterized in that the dry thickness of the magnetic layer is 0.05 - 0.30 mu m, phi m is 10.0 x 10 - 1.0 x 10 emu/cm , and the coercive force of the magnetic layer is not less than 1800 Oe. The magnetic recording medium has significantly improved electromagnetic characteristics, especially high density recording characteristics, excellent durability, and especially a significantly improved error rate in the high density recording region. Particularly, a large capacity magnetic recording medium whose recording capacity is 0.17 - 2 Gbit/inch , more particularly, a disc magnetic recording medium can be provided.
摘要翻译：一种磁记录介质，其具有基本上非磁性的下层和磁性层，所述磁性层由铁磁金属粉末或铁磁六方铁氧体粉末分散在依次形成在载体上的粘结剂中制成。（1）表面记录密度为0.17-2Gbit / inch 2的磁记录介质的特征在于，磁层的矫顽力不小于1800Oe，并且铁磁金属的平均长轴长度粉末不大于0.15μm，或铁磁六方晶系铁氧体粉末的平均粒径不大于0.10μm。并且（2）表面记录密度为0.17-2Gbit / inch 2的磁记录介质的特征在于，磁性层的干燥厚度为0.05-0.30μm，φm为10.0×10 -3 > -1.0×10 -3 emu / cm 2，并且磁性层的矫顽力不小于1800Oe。磁记录介质具有显着改善的电磁特性，特别是高密度记录特性，优异的耐久性，并且特别是在高密度记录区域中显着改善了错误率。特别地，可以提供记录容量为0.17-2Gbit / inch 2的大容量磁记录介质，更具体地，可以提供盘式磁记录介质。

4. 发明授权

EP0453276B1 Biaxially oriented polyester film for magnetic recording media 有权
标题翻译：磁记录介质用双轴取向聚酯膜
公开(公告)号：EP0453276B1
公开(公告)日：1996-09-18
申请号：EP91303453.4
申请日：1991-04-18
申请人： TEIJIN LIMITED
发明人： Kato, Sumio , Oba, Yoshihiro , Murooka, Hirofumi , Minobe, Nobuo , Katoh, Hideo
IPC分类号： G11B5/71
CPC分类号： G11B5/733 , Y10S428/91 , Y10T428/24372 , Y10T428/254 , Y10T428/257 , Y10T428/259 , Y10T428/31786

5. 发明授权

EP0536956B1 Magnetic recording medium 失效
标题翻译： Magnetaufzeichnungsträger
公开(公告)号：EP0536956B1
公开(公告)日：1996-09-11
申请号：EP92308998.1
申请日：1992-10-01
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Haidos, John C., c/o Minnesota Mining and , Arudi, Ravindra L., c/o Minnesota Mining and , Rotto, Nelson T., c/o Minnesota Mining and
IPC分类号： G11B5/71 , G11B5/72
CPC分类号： G11B5/735 , G11B5/7013 , G11B5/7021 , G11B5/7023 , G11B5/7026

6. 发明公开

EP0643125A1 LUBRICANT AND MAGNETIC RECORDING MEDIUM CONTAINING THE SAME 失效
标题翻译：油脂和这种含磁记录介质。
公开(公告)号：EP0643125A1
公开(公告)日：1995-03-15
申请号：EP93906816.9
申请日：1993-03-24
申请人： SONY CORPORATION
发明人： KONDO, Hirofumi, Sony Corporation , SEKI, Atsushi, Sony Corporation , KAMEI, Takahiro, Sony Corporation , TANAKA, Koichi, Sony Corporation
IPC分类号： C10M107/38 , G11B5/71
CPC分类号： G11B5/71 , C10M105/54 , C10M107/38 , C10M2211/044 , C10M2211/06 , C10N2240/00 , C10N2240/20 , C10N2240/201 , C10N2240/202 , C10N2240/203 , C10N2240/204 , C10N2240/205 , C10N2240/22 , C10N2240/30 , C10N2240/50 , C10N2240/52 , C10N2240/54 , C10N2240/56 , C10N2240/58 , C10N2240/60 , C10N2240/66 , G11B5/725
摘要： A lubricant comprising an ester compound prepared from a hydroxyl-terminated perfluorinated polyether and a long-chain carboxylic acid or a fluoroalkylated carboxylic acid, or from a carboxyl-terminated perfluorinated polyether and a long-chain alcohol or a fluoroalkylated alcohol; and a magnetic recording medium containing the same. The lubricant has a good lubricity not only even under severe conditions including both a low temperature and humidity and high temperature and humidity but also for a long period of time. Accordingly, when used as a lubricant for a magnetic recording medium, it can lower the coefficient of friction and remarkably improve the travelling characteristics, wear resistance and durability.

7. 发明授权

EP0270070B1 Highly running-endurant magnetic recording medium 无效
标题翻译：具有高耐磨损性的磁记录介质。
公开(公告)号：EP0270070B1
公开(公告)日：1994-02-16
申请号：EP87117740.8
申请日：1987-12-01
申请人： KONICA CORPORATION
发明人： Koyama, Noboru , Ishiguro, Shu , Isobe, Ryosuke
IPC分类号： G11B5/714 , G11B5/708 , G11B5/71
CPC分类号： G11B5/714 , G11B5/708 , G11B5/71

8. 发明授权

EP0308979B1 Magnetic disc 失效
标题翻译：磁盘。
公开(公告)号：EP0308979B1
公开(公告)日：1993-12-22
申请号：EP88115767.1
申请日：1988-09-24
申请人： Hitachi Maxell Ltd.
发明人： Miyake, Akira , Kato, Akira , Mizushima, Kunio
IPC分类号： G11B5/70 , G11B5/714 , G11B5/71
CPC分类号： G11B5/71 , G11B5/70615 , G11B5/714 , G11B5/718

9. 发明公开

EP0567657A1 MAGNETIC RECORDING MEDIUM AND PRODUCTION METHOD THEREOF 失效
标题翻译： VERFAHREN ZU SEINER HERSTELLUNG的MAGNETISCHERAUFZEICHNUNGSTRÄGER。
公开(公告)号：EP0567657A1
公开(公告)日：1993-11-03
申请号：EP92923983.8
申请日：1992-11-18
申请人： SONY CORPORATION
发明人： CHIBA, Kazunobu , SATO, Kenichi , ARISAKA, Yuichi , KONDO, Hirofumi , YAMADA, Yukari
IPC分类号： G11B5/72 , G11B5/71
CPC分类号： G11B5/725 , G11B5/72 , G11B5/735 , G11B5/8408 , Y10S428/90 , Y10T428/24355 , Y10T428/265 , Y10T428/30 , Y10T428/31721 , Y10T428/31725 , Y10T428/31786
摘要： This invention discloses a magnetic recording medium using a metal magnetic thin film as a magnetic layer. An oxyde layer is formed on the surface of the metal magnetic thin film, and a protective layer is formed further on this oxyde layer. The thickness of the oxyde layer on the metal magnetic thin film is 20 to 230 Å, the thickness of the protective layer is 20 to 230 Å, and the total thickness of the oxyde layer and the protective layer is 40 to 250 Å. Before the protective layer is formed, the surface may be bombarded to improve adhesion of the protective layer. A lubricant can be applied on the surface of the protective layer, as well. Examples of the lubricants are carboxylic acid/perfluoroalkyl esters, ester compounds such as perfluoropolyethers containing a carboxy group, and amine salt compounds. On the other hand, the back of a non-magnetic support as a substrate has a mean coarseness R a at the center line and protrusions having a maximum height R max which satisfy the following relation: 0.0015 µm ≦ R a ≦ 0.0070 µm, 0.015 ≦ R max ≦ 0.070 µm. 8
摘要翻译：本发明公开了一种使用金属磁性薄膜作为磁性层的磁记录介质。在金属磁性薄膜的表面上形成氧化物层，在该氧化物层上形成保护层。金属磁性薄膜上的氧化物层的厚度为20〜230安培，保护层的厚度为20〜230安培，氧化物层和保护层的总厚度为40〜250安培。在形成保护层之前，可以轰击表面以提高保护层的粘附性。也可以在保护层的表面上施加润滑剂。润滑剂的实例是羧酸/全氟烷基酯，酯化合物如含羧基的全氟聚醚和胺盐化合物。另一方面，作为基板的非磁性载体的背面具有在中心线上的平均粗糙度Ra，并且具有满足以下关系的最大高度Rmax的突起：0.0015μmRa =0.0070μm m，0.015≤Rmax<0.070μm。 8

10. 发明授权

EP0227025B1 Fluorine-containing organosilanes useful as magnetic media lubricants 失效
标题翻译：含有氟的有机物有用的磁性介质润滑剂
公开(公告)号：EP0227025B1
公开(公告)日：1992-09-30
申请号：EP86117565.1
申请日：1986-12-17
申请人： DOW CORNING CORPORATION
发明人： Blatch, Pamela Estelle
IPC分类号： C07F7/18 , G11B5/71
CPC分类号： G11B5/71 , C07F7/182 , C07F7/1896 , C10M105/76 , C10M2227/04 , C10N2240/20 , C10N2240/201 , C10N2240/202 , C10N2240/203 , C10N2240/204 , C10N2240/205 , Y10T428/31663

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