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1.发明授权Magnetic recording medium having a protective layer containing a tetrazaindene or thiouracil cyclic compound and a fluorine compound 失效具有含有四嗪或硫脲嘧啶环化合物和氟化合物的保护层的磁记录介质
公开(公告)号：US5492764A
公开(公告)日：1996-02-20
申请号：US364410
申请日：1994-12-23
IPC分类号： G11B5/66 , C09D171/02 , C10M105/54 , C10M133/40 , C10M135/30 , C10N10/12 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/73 , G11B5/00
CPC分类号： G11B5/72 , G11B5/725 , Y10S428/90 , Y10T428/31678
摘要： The magnetic recording medium of the present invention comprises a ferromagnetic metallic thin film formed on a non-magnetic support, whereby a protective layer is formed on the ferromagnetic metallic thin film, said protective layer contains at least one type of thiouracil cyclic compounds having hydrocarbon group and at least one type of fluorine compounds having hydrocarbon group, or at least one type of tetrazaindene cyclic compounds and at least one type of fluorine compounds having hydrocarbon group, and no rusting occurs even when it is repeatedly run.
摘要翻译： 本发明的磁记录介质包括在非磁性载体上形成的强磁性金属薄膜，由此在强磁性金属薄膜上形成保护层，所述保护层含有至少一种具有烃基的硫脲嘧啶环状化合物 和至少一种具有烃基的氟化合物，或至少一种类型的四氮茚环状化合物和至少一种具有烃基的氟化合物，即使反复进行也不会发生生锈。
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2.发明授权
公开(公告)号：US5567524A
公开(公告)日：1996-10-22
申请号：US379931
申请日：1995-01-27
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/30 , Y10T428/3154 , Y10T428/31678
摘要： A magnetic recording medium having a ferromagnetic metal thin film formed over at least one surface of a non-magnetic support, wherein the improvement has a lubricant layer consisting essentially of at least one of unsaturated bond-containing fluoroalkyl carboxylic acid esters which are represented by the following formulae (1) to (3):Rf--R.sub.1 --COO--R.sup.2 Formula (1)R.sup.3 --COO--R.sub.4 --Rf Formula (2)Rf--R.sup.5 --COO--R.sup.6 Rf Formula (3)where Rf: (CF.sub.3).sub.a CF.sub.3-a (CF.sub.2).sub.ba: 1 to 3 a+b: 1 to 17R.sup.1 is an alkyl group having from 2 to 18 carbon atoms, or a hydrocarbon group having from 2 to 18 carbon atoms and containing at least one double or triple bond, and R.sup.2 is an alkyl group having from 4 to 22 carbon atoms, or a hydrocarbon group having from 4 to 22 carbon atoms and containing at least one double or triple bond. At least either one of R.sup.1 and R.sup.2 contains at least one double or triple bond. R.sup.3 is an alkyl group having from 3 to 21 carbon atoms, and R.sup.4 is a hydrocarbon group having from 4 to 18 carbon atoms and containing at least one double or triple bond. R.sup.5 and R.sup.6 are each an alkyl group having from 2 to 18 carbon atoms, or a hydrocarbon group having from 2 to 18 carbon atoms and containing at least one double or triple bond. At least either one of R.sup.5 and R.sup.6 contains at least one double or triple bond. R.sup.5 and R.sup.6 have from 20 to 44 carbon atoms in total.
摘要翻译： 一种具有在非磁性载体的至少一个表面上形成的强磁性金属薄膜的磁记录介质，其中所述改进具有基本上由至少一种含不饱和键的氟烷基羧酸酯组成的润滑层，所述不饱和键的氟烷基羧酸酯由 （1）至（3）：Rf-R1-COO-R2（1）R3-COO-R4-Rf（2）Rf-R5-COO-R6RfFormula（3）其中Rf：（CF3）aCF3-a CF 2）ba：1〜3 a + b：1〜17 R 1为碳原子数2〜18的烷基或碳原子数为2〜18的含有至少一个双键或三键的烃基，R 2 是具有4至22个碳原子的烷基或具有4至22个碳原子并且含有至少一个双键或三键的烃基。 R1和R2中至少有一个含有至少一个双键或三键。 R3是具有3至21个碳原子的烷基，R4是具有4至18个碳原子并含有至少一个双键或三键的烃基。 R 5和R 6各自为具有2至18个碳原子的烷基或具有2至18个碳原子且含有至少一个双键或三键的烃基。 R5和R6中的至少一个含有至少一个双键或三键。 R5和R6总共具有20至44个碳原子。
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3.发明授权
公开(公告)号：US5560995A
公开(公告)日：1996-10-01
申请号：US442755
申请日：1995-05-17
申请人： Kazuyuki Usuki , Toshio Ishida , Tadashi Yasunaga
发明人： Kazuyuki Usuki , Toshio Ishida , Tadashi Yasunaga
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/31678
摘要： The magnetic recording medium has a magnetic layer of a ferromagnetic metal thin film over at least one surface of a non-magnetic base, in which a phosphoric monoester compound which is represented by R.sub.1 --OPO(OH).sub.2, a florine-containing fatty acid ester compound which is represented by R.sub.2 --COO--R.sub.3, and a fluorinated hydrocarbon in which some of the hydrogen atoms of a hydrocarbon having from 14 to 40 carbon atoms have been replaced by fluorine atoms, are present on the magnetic layer. R.sub.1 is a hydrocarbon group having from 8 to 26 carbon atoms. R.sub.2 and R.sub.3 are each a hydrocarbon group having from 8 to 26 carbon atoms, or a fluorinated hydrocarbon group in which some or all of the hydrogen atoms of a hydrocarbon group having from 8 to 26 carbon atoms have been replaced by fluorine atoms. R.sub.2 and R.sub.3 may be the same or different from each other. At least either one of R.sub.2 and R.sub.3 contains fluorine atoms.
摘要翻译： 磁记录介质在非磁性碱的至少一个表面上具有强磁性金属薄膜的磁性层，其中由R1-OPO（OH）2表示的磷酸单酯化合物，含有佛罗里酸的脂肪酸 由R2-COO-R3表示的酯化合物和其中一些具有14〜40个碳原子的烃的氢原子被氟原子代替的氟化烃存在于磁性层上。 R1是具有8至26个碳原子的烃基。 R2和R3各自为具有8至26个碳原子的烃基或其中具有8至26个碳原子的烃基的一些或全部氢原子已被氟原子替代的氟化烃基。 R2和R3可以相同或不同。 R2和R3中的至少一个含有氟原子。
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4.发明授权
公开(公告)号：US5556707A
公开(公告)日：1996-09-17
申请号：US401999
申请日：1995-03-10
申请人： Kazuyuki Usuki , Toshio Ishida , Tadashi Yasunaga
发明人： Kazuyuki Usuki , Toshio Ishida , Tadashi Yasunaga
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/3154 , Y10T428/31544 , Y10T428/31678
摘要： A metal thin film type magnetic recording medium which is excellent in running properties, durability and shelf stability. The magnetic recording medium has a ferromagnetic metal thin film formed over a non-magnetic base, and further has on the ferromagnetic metal thin film a lubricant layer containing a phosphoric monoester compound represented by the following formula (1), and an alkylene oxide group-containing fluorinated carboxylic acid ester compound represented by the following formula (2) or (3):R.sup.1 --OPO(OH).sub.2 Formula (1)where R.sup.1 is a hydrocarbon group having from 8 to 26 carbon atoms.Rf.sup.1 --R.sup.2 --COO--(R.sup.3 O).sub.n --R.sup.4 Formula (2)Rf.sup.2 --R.sup.2 --COO--(R.sup.3 O).sub.n --R.sup.4 --Rf.sup.3Formula (3)where Rf.sup.1, Rf.sup.2, Rf.sup.3 : (CF.sub.3).sub.a CF.sub.3-a (CF.sub.2).sub.b -- a: 1 to 3 a+b: 1 to 11 n=l to 8R.sup.2 is an alkylene or alkenyl group having from 2 to 14 carbon atoms;R.sup.3 is an alkylene group having from 1 to 4 carbon atoms; andR.sup.4 is an alkylene group having from 2 to 18 carbon atoms.
摘要翻译： 一种金属薄膜型磁记录介质，其运行性能，耐久性和货架稳定性优异。 磁记录介质具有在非磁性基底上形成的强磁性金属薄膜，并且在铁磁金属薄膜上还含有由下式（1）表示的磷酸单酯化合物的润滑层， （2）或（3）表示的含氟氟代羧酸酯化合物：R1-OPO（OH）2（1）其中R1是具有8至26个碳原子的烃基.Rf1-R2-COO-（ （3）其中Rf1，Rf2，Rf3：（CF3）aCF3-a（CF2）b-a：1〜3a +（R3O）n-R4Formula（2）Rf2-R2-COO-（R3O）n-R4-Rf3 b：1〜11 n = 1〜8 R2为碳原子数为2〜14的亚烷基或烯基， R3是具有1至4个碳原子的亚烷基; R4为碳原子数2〜18的亚烷基。
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公开(公告)号：US5405689A
公开(公告)日：1995-04-11
申请号：US056883
申请日：1993-05-05
申请人： Kazuyuki Usuki , Tadashi Yasunaga
发明人： Kazuyuki Usuki , Tadashi Yasunaga
CPC分类号： G11B5/738 , Y10S428/90 , Y10T428/25 , Y10T428/259 , Y10T428/26 , Y10T428/265 , Y10T428/3154 , Y10T428/31786
摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having an undercoating layer provided on said non-magnetic support and a magnetic layer provided on said undercoating layer, wherein said undercoating layer provided between said non-magnetic support and said magnetic layer comprises mainly a non-magnetic fine particles having an average particle size of 100 to 350 .ANG. and a binder; said binder is a polyester resin having a glass transition temperature (Tg) of 40.degree. C. or less, said undercoating layer has a thickness of 30 to 250 .ANG.; and said magnetic layer is a ferromagnetic metal thin film.
摘要翻译： 公开了一种磁记录介质，包括具有设置在所述非磁性载体上的底涂层和设置在所述底涂层上的磁性层的非磁性载体，其中设置在所述非磁性载体和所述磁性层之间的所述底涂层包括 主要是平均粒度为100〜350和粘合剂的非磁性微粒; 所述粘合剂是玻璃化转变温度（Tg）为40℃以下的聚酯树脂，所述底涂层的厚度为30〜250; 并且所述磁性层是铁磁金属薄膜。
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公开(公告)号：US5489480A
公开(公告)日：1996-02-06
申请号：US307107
申请日：1994-09-16
申请人： Kazuyuki Usuki , Tadashi Yasunaga
发明人： Kazuyuki Usuki , Tadashi Yasunaga
CPC分类号： G11B5/725 , G11B5/8408 , Y10S428/90 , Y10T428/3154
摘要： Disclosed is a process for producing a magnetic recording medium comprising subjecting a ferromagnetic metal thin film formed on a non-magnetic support by vacuum film formation to a high humidity treatment in an atmosphere of from 50 to 90% RH at a temperature of from 10.degree. to 50.degree. C. and then applying a lubricant having a polar group in the molecule thereof to the thus treated ferromagnetic metal thin film, and a magnetic recording medium comprising a non-magnetic support having thereon a ferromagnetic metal thin film, wherein the ferromagnetic metal thin film has provided thereon a double lubricant layer comprising (i) a lower layer comprising a polar group-containing perfluoropolyether and (ii) an upper layer comprising a perfluoropolyether having no polar group, the polar group-containing perfluoropolyether has a viscosity of from 200 to 1000 cSt at room temperature and the perfluoropolyether having no polar group has a viscosity of 50 cSt or less at room temperature.
摘要翻译： 公开了一种磁记录介质的制造方法，其特征在于，在50〜90％RH的气氛中，在10℃的温度下，通过真空成膜对形成在非磁性载体上的强磁性金属薄膜进行高湿处理 然后在其分子中加入具有极性基团的润滑剂加到如此处理的铁磁性金属薄膜上，以及磁记录介质，该磁记录介质包括其上具有强磁性金属薄膜的非磁性载体，其中铁磁性金属 薄膜在其上提供了双润滑剂层，其包含（i）包含极性基团的全氟聚醚的下层和（ii）包含不含极性基团的全氟聚醚的上层，含极性基团的全氟聚醚的粘度为200 在室温下为1000cSt，并且没有极性基团的全氟聚醚在室温下的粘度为50cSt以下。
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公开(公告)号：US5334413A
公开(公告)日：1994-08-02
申请号：US978520
申请日：1992-11-18
申请人： Toshio Ishida , Yasuo Nishikawa , Tadashi Yasunaga
发明人： Toshio Ishida , Yasuo Nishikawa , Tadashi Yasunaga
IPC分类号： G11B5/72 , C09D5/23 , C09D171/02 , G11B5/64 , G11B5/725 , G11B5/73 , G11B5/84 , G11B5/85 , B05D5/12
CPC分类号： G11B5/85 , G11B5/725 , G11B5/8408
摘要： A ferromagnetic thin metal film type magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a ferromagnetic thin metal film, wherein a perfluoropolyether having at least one polar group having the saturation adsorption amount (mg/m.sup.2) of at least 4.0 mg/m.sup.2 against the ferromagnetic thin metal film is coated or applied onto the surface of the ferromagnetic thin metal film. There is also disclosed a method for preparing a ferromagnetic thin metal film type magnetic recording medium comprising forming a ferromagnetic thin metal film, subjecting the ferro-magnetic thin metal film to a treatment with oxygen gas, ozone gas, a heat treatment or a treatment with an inert gas, and then applying a perfluoropolyether having at least one polar group to the ferromagnetic thin metal film.
摘要翻译： 公开了一种铁磁性薄金属膜型磁记录介质，其包括其上具有铁磁性薄金属膜的非磁性载体，其中具有至少一个具有饱和吸附量（mg / m 2）的极性基团的全氟聚醚至少为4.0mg / m 2相对铁磁性金属薄膜被涂覆或施加到铁磁性金属薄膜的表面上。 还公开了一种制备铁磁性薄金属膜型磁记录介质的方法，该方法包括形成铁磁性金属薄膜，对铁磁性金属薄膜进行氧气处理，臭氧气体处理，热处理或用 惰性气体，然后将具有至少一个极性基团的全氟聚醚加到铁磁薄金属膜上。
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8.发明申请METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM PRODUCED BY THE PRODUCTION METHOD, AND MOLD STRUCTURE FOR USE IN THE PRODUCTION METHOD 审中-公开用于生产磁记录介质的方法，由生产方法生产的磁记录介质和用于生产方法的模具结构公开(公告)号：US20080316649A1
公开(公告)日：2008-12-25
申请号：US12142611
申请日：2008-06-19
摘要： The present invention provides a method for producing a magnetic recording medium having servo areas and data areas using a mold structure having a plurality of convex portions, the method, including: forming an imprint resist layer on a surface of a substrate for the magnetic recording medium, forming a convexo-concave resist pattern in the formed imprint resist layer by pressing the plurality of convex portions of the mold structure against the imprint resist layer, and transferring magnetism to the servo areas in the magnetic recording medium by applying a magnetic field to the servo areas via the mold structure.
摘要翻译： 本发明提供一种使用具有多个凸部的模具结构来制造具有伺服区域和数据区域的磁记录介质的方法，所述方法包括：在用于磁记录介质的基板的表面上形成压印抗蚀剂层 通过将模具结构的多个凸部按压在抗蚀剂层上，在形成的抗压印层中形成凹凸的抗蚀剂图案，并通过对磁记录介质施加磁场将磁力传递到磁记录介质的伺服区域 伺服区通过模具结构。
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公开(公告)号：US07149042B2
公开(公告)日：2006-12-12
申请号：US11014944
申请日：2004-12-20
IPC分类号： G11B5/86
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/743 , G11B5/82 , G11B5/865
摘要： A master carrier for magnetic transfer is equipped with a substrate having a land/groove pattern. The land/groove pattern is formed from a magnetic material and corresponds to information that is transferred to a magnetic recording disk. Each land in the land/groove pattern has four round corners whose radius is from 1% through 47% of the width of a data track on the disk.
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公开(公告)号：US07054082B2
公开(公告)日：2006-05-30
申请号：US10163370
申请日：2002-06-07
IPC分类号： G11B5/86
CPC分类号： G11B5/865 , G11B5/59633 , G11B5/82
摘要： An accurate magnetic transfer to a high-density slave medium having two magnetic layers and utilizing antiferromagnetic coupling is performed. By applying a first magnetic field that causes both the first and second magnetic layers of the magnetic layer of a slave medium to reach saturation magnetization unidirectionally along the circumferential direction of the track, the first and second magnetic layers are magnetized uniformly in the same direction as the first magnetic field. Then, a second magnetic field that inverts the magnetization of the first magnetic layer and has no effect on the magnetization of the second magnetic layer is applied in the opposite direction, whereby only the magnetization direction of the first magnetic layer is inverted in the direction of the second magnetic field. Thereby, a favorable initial magnetization state in which the magnetization directions of the first and second magnetic layers are oriented antiparallel can be obtained.
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