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1. 发明专利

JP2014241182A 磁気記録媒体およびその製造方法有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：JP2014241182A
公开(公告)日：2014-12-25
申请号：JP2013272778
申请日：2013-12-27
申请人：ソニー株式会社 , Sony Corp
发明人： TACHIBANA JUNICHI , ITO JOTA , OZAKI TOMOE , HIRATSUKA RYOICHI , SEKIGUCHI NOBORU , ENDO TETSUO
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/84 , G11B5/851
CPC分类号： G11B5/732 , G11B5/65 , Y10T156/10
摘要：【課題】磁気特性を向上することができる磁気記録媒体を提供する。【解決手段】磁気記録媒体は、基体と、シード層と、下地層と、記録層とを備える。シード層は、基体と下地層との間に設けられている。シード層は、アモルファス状態を有し、Ti、CrおよびOを含む合金を含んでいる。シード層に含まれるTiおよびCrの総量に対するTiの割合は、30原子%以上100原子%以下である。シード層に含まれるTi、CrおよびOの総量に対するOの割合は、15原子%以下である。【選択図】図1
摘要翻译：要解决的问题：提供具有改善的磁性能的磁记录介质。解决方案：提供一种磁记录介质，包括：基座; 种子层; 基础层; 以及记录层，所述种子层设置在所述基底和所述基础层之间，具有非晶状态，包括含有Ti，Cr和O的合金，Ti的百分比为30原子％至100原子％基于种子层中所含的Ti，Cr和O的总量，所述种子层中含有的Ti，Cr的含量，O的比例为15原子％以下。

2. 发明专利

JP2003006851A Method for manufacturing magnetic recording medium 审中-公开
标题翻译：制造磁记录介质的方法
公开(公告)号：JP2003006851A
公开(公告)日：2003-01-10
申请号：JP2001182534
申请日：2001-06-15
申请人： Sony Corp , ソニー株式会社
发明人： CHIBA TAKASHI , ITO JOTA , MIURA TOSHIAKI , MASUZAWA YUICHI
IPC分类号： G11B5/84 , G11B5/85
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a magnetic recording medium, in which the cupping being generated through the evaporation for a metal magnetic layer on a magnetic recording medium can be properly rectified by heat treatment for a supporting body even when a material having a relatively small heat-shrinkage rate is used for the material for forming the supporting body, and in which the contact state of the magnetic-recording medium with a recording/reproducing head can be improved.
SOLUTION: It includes a magnetic layer forming step PR1 in which the magnetic layer is formed by the evaporation on the supporting body, an oxidation treatment step PR4 in which the supporting body having the magnetic layer being formed thereon is stored in an atmosphere at a prescribed pressure containing a prescribed concentration of oxygen gas for a prescribed period of time and which oxidizes the magnetic layer, and a heat treatment step PR5 in which the supporting body on which the magnetic layer is formed after the storage is heated to a prescribed temperature to thermally shrink the supporting body and in which the curvature of the magnetic recording medium being generated by the shrinkage of the magnetic layer at the time of evaporating the magnetic layer is rectified into a desired shape.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种制造磁记录介质的方法，其中通过磁记录介质上的金属磁性层的蒸发产生的电镀可以通过用于支撑体的热处理适当地整流，即使当材料具有相对小的热收缩率用于形成支撑体的材料，并且其中可以提高具有记录/再现头的磁记录介质的接触状态。解决方案：包括磁性层形成步骤PR1，其中通过在支撑体上的蒸发形成磁性层，氧化处理步骤PR4，其中形成有磁性层的支撑体在规定的气氛中储存含有规定浓度的氧气一定时间并使磁性层氧化的热压处理步骤PR5，其中在其上形成有磁性层的支撑体被加热至规定温度以进行热处理收缩支撑体，并且其中通过磁性层蒸发时的磁性层的收缩而产生的磁记录介质的曲率被整流为期望的形状。

3. 发明专利

JP2004348837A Magnetic recording medium 审中-公开
公开(公告)号：JP2004348837A
公开(公告)日：2004-12-09
申请号：JP2003143807
申请日：2003-05-21
申请人： Sony Corp , ソニー株式会社
发明人： UCHIUMI TOSHIHARU , SAGANE MASAYOSHI , TAKEDA TSUTOMU , ITO JOTA , OGASAWARA MAYUMI
IPC分类号： C10M105/54 , C10M107/38 , C10N30/06 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725
摘要： PROBLEM TO BE SOLVED: To enhance durability and running properties of a metal magnetic thin film type magnetic recording medium wherein a ferromagnetic metal thin film is formed on a non-magnetic substrate as a magnetic layer by vacuum thin film forming technique. SOLUTION: In the magnetic recording medium wherein the magnetic layer 2 and a protective layer 3 are formed on the non-magnetic substrate 1, a lubricant layer 4 containing at least one compound of a compound represented by general formula (1) or a compound represented by general formula (2) and an ester compound represented by general formula (3) is provided on the protective layer 3. Thereby, the magnetic recording medium wherein lubricity is suitably kept and powder drop is avoided even in the so-called severe usage condition and which has excellent running properties and durability is obtained. COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2003030817A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2003030817A
公开(公告)日：2003-01-31
申请号：JP2001215633
申请日：2001-07-16
申请人： Sony Corp , ソニー株式会社
发明人： ITO JOTA , MIURA TOSHIAKI
IPC分类号： G11B5/73 , G11B5/735
摘要： PROBLEM TO BE SOLVED: To obtain both of a low error rate and excellent traveling durability. SOLUTION: The medium has a magnetic layer 2 made of a metal magnetic thin film formed on one principal face of a nonmagnetic supporting body and has a back coat layer 3 on the other principal face of the supporting body 1. The nonmagnetic supporting body 1 contains an aromatic polyamide and its film thickness is controlled to the range of >=3.0 μm and =0.8 μm and
摘要翻译：要解决的问题：为了获得低错误率和优异的行驶耐久性。解决方案：介质具有形成在非磁性支撑体的一个主面上的由金属磁性薄膜制成的磁性层2，并且在支撑体1的另一个主面上具有背涂层3.非磁性支撑体1包含芳香族聚酰胺，其膜厚度控制在> =3.0μm和<=4.0μm的范围内。背涂层2至少含有聚碳酸酯聚氨酯，其膜厚控制在> =0.8μm和<=1.4μm的范围内。

5. 发明专利

JP2005339648A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2005339648A
公开(公告)日：2005-12-08
申请号：JP2004155652
申请日：2004-05-26
申请人： Sony Corp , ソニー株式会社
发明人： ITO JOTA , OMIYA TAKESHI , MIZUNO YUTAKA , TANI MASAYUKI , TAKEDA TSUTOMU
IPC分类号： G11B5/78 , G11B5/65 , G11B5/73
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which is excellent in sliding durability in repeated high-speed travel and favorable in head contact, has less spacing loss and can cope with an AIT4 format.
SOLUTION: Loop stiffness SMD (unit: mN/8 mm) in the length direction of a magnetic recording medium having a metal magnetic thin film on a nonmagnetic support object (for example, a polyamide film) and the loop stiffness STD (unit: mN/8 mm) in the width direction is constituted so that all the following formulas can be satisfied. 1.0≤STD/SMD≤1.4... (1) 10.0 2 .
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供在重复的高速行驶中具有优异的滑动耐久性和良好的头部接触的磁记录介质，具有较小的间隔损耗并且可以应对AIT4格式。解决方案：在非磁性载体（例如聚酰胺膜）上具有金属磁性薄膜的磁记录介质的长度方向上的环路刚度SMD（单位：mN / 8mm）和环刚度STD（单位：mN / 8mm）构成为能够满足以下所有的公式。 1.0≤STD/SMD≤1.4...（1）10.0

6. 发明专利

JP2004310967A Magnetic recording medium 审中-公开
公开(公告)号：JP2004310967A
公开(公告)日：2004-11-04
申请号：JP2003106757
申请日：2003-04-10
申请人： Sony Corp , ソニー株式会社
发明人： SAGANE MASAYOSHI , UCHIUMI TOSHIHARU , TAKEDA TSUTOMU , MIZUNO YUTAKA , OGASAWARA MAYUMI , ITO JOTA , SEKI KAZUE
IPC分类号： C10M105/40 , C10M105/54 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To improve the durability and the travelling performance of the magnetic recording medium of a metal magnetic thin film. SOLUTION: After the surface of a carbon protective layer 3 is subjected to predetermined treatment, a lubricant containing at least one of a compound indicated by a general formula (1) and a compound indicated by a general formula (2) is held in an outermost layer. In the formulas, R1 denotes fatty alkyl or alkenyl, and R2 denotes one of fluoroalkyl, fluoroalkenyl, fatty alkyl and fatty alkenyl. COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2003317219A Magnetic recording medium and method for manufacturing the same 审中-公开
标题翻译：磁记录介质及其制造方法
公开(公告)号：JP2003317219A
公开(公告)日：2003-11-07
申请号：JP2002118979
申请日：2002-04-22
申请人： Sony Corp , ソニー株式会社
发明人： SATO YASUYOSHI , ITO JOTA
IPC分类号： G11B5/64 , G11B5/73 , G11B5/85
CPC分类号： G11B5/64 , G11B5/85
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which is obtained by a vacuum vapor deposition process for forming a thin magnetic metallic film under introduction of oxygen and has a high recording capacity to make a high output obtainable in spite of the low noise applicable to an ALT3 format and a method for manufacturing the same.
SOLUTION: The surface of a nonmagnetic support is provided with the thin magnetic metallic film of Co under introduction of the gaseous oxygen by applying the vacuum vapor deposition process while the nonmagnetic support is made to travel continuously at a high speed by controlling the traveling speed of the nonmagnetic support to a range of from 150 to 200 m/min, by which the coercive force Hc of the thin magnetic metallic film of Co is regulated to 100 to 115 kA/m and the squareness ratio Rs thereof to ≥0.79.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种通过真空气相沉积工艺获得的磁记录介质，用于在引入氧气的情况下形成薄的磁性金属膜，并且具有高记录能力，以获得高的输出，尽管适用于ALT3格式的低噪声及其制造方法。解决方案：通过施加真空气相沉积工艺在气态氧的引入下，非磁性载体的表面设置有Co的薄磁性金属膜，同时通过控制非磁性载体使非磁性载体以高速连续行进，非磁性载体的行进速度为150〜200m / min，Co的薄磁性金属膜的矫顽力Hc为100〜115kA / m，矩形比Rs为≥0.79 。版权所有（C）2004，JPO

8. 发明专利

JP2001236632A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JP2001236632A
公开(公告)日：2001-08-31
申请号：JP2000052205
申请日：2000-02-23
申请人： SONY CORP
发明人： MIURA TOSHIAKI , ITO JOTA , SATO YASUYOSHI , YATAGAI HIROSHI
IPC分类号： C10M105/28 , C09D5/23 , C09D201/00 , C10M105/54 , C10M107/38 , C10N30/00 , C10N40/18 , G11B5/725 , G11B5/735
摘要： PROBLEM TO BE SOLVED: To ensure superior running performance and durability by using a lubricant which sustains its lubricating effect over a long period of time and enhancing the stability of adhesion of the lubricant to a protective film. SOLUTION: The magnetic recording medium has a nonmagnetic substrate 2, a magnetic layer 3 formed on one principal face of the substrate 2, a protective film 4 formed on the magnetic layer 3 and a back coat layer 5 formed on the other principal face of the substrate 2. A 1st lubricative layer with an aromatic carboxylic acid and an ester compound of a perfluoro-polyether having hydroxyl groups at the ends and a long chain carboxylic acid has been held on the protective film 4 and a 2nd lubricative layer with an ester compound of a perfloro-polyether having hydroxyl groups at the ends and a long chain carboxylic acid has been held on he back coat layer 5.

9. 发明专利

JP2001236627A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JP2001236627A
公开(公告)日：2001-08-31
申请号：JP2000052200
申请日：2000-02-23
申请人： SONY CORP
发明人： MIURA TOSHIAKI , ITO JOTA , SATO YASUYOSHI , YATAGAI HIROSHI
IPC分类号： C10M105/16 , C09D5/23 , C09D201/00 , C10M107/38 , C10N30/00 , C10N40/18 , G11B5/64 , G11B5/725 , G11B5/735
摘要： PROBLEM TO BE SOLVED: To ensure superior running performance and durability by using a lubricant which sustains its lubricating effect over a long period of time and enhancing the stability of adhesion of the lubricant to a protective film. SOLUTION: The magnetic recording medium ahs a nonmagnetic substrate 2, a magnetic layer 3 formed on one principal force of the substrate 2, a protective film 4 formed on the magnetic layer 3 and a back coat layer 5 formed on the other principal face of the substrate 2. A 1st lubricative layer with an aromatic alcohol and a compound of a bifunctional perfluoro-polyether having carboxyl groups at the ends and an amine has been held on the protective film 4 and a 2nd lubricative layer with a compound of a bifunctional perfluoro- polyether having carboxyl groups at the ends and an amine has been held on the back coat layer 5.

10. 发明专利

JP2001110039A METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JP2001110039A
公开(公告)日：2001-04-20
申请号：JP28479299
申请日：1999-10-05
申请人： SONY CORP
发明人： ITO JOTA , SATO YASUYOSHI , YATAGAI HIROSHI
IPC分类号： G11B5/725 , C10M105/34 , C10M105/60 , C10M111/02 , C10N40/18 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To realize excellent running performance and durability of a magnetic recording medium by using a lubricant having a lubricating effect kept for a long period and enhancing the adhesion stability between a protective film and the lubricant. SOLUTION: The magnetic recording medium is characterized in that the surface of the protective film is irradiated with UV in the atmosphere of inert gas and then the lubricant which contains a compound of bifunctional perfluoropolyether having carboxylic groups at the both terminals of its molecule and an amine and a branching carboxylic acid mono ester is held as an outermost layer on the surface of the protective film.

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