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1. 发明授权

US4797321A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4797321A
公开(公告)日：1989-01-10
申请号：US918973
申请日：1986-10-15
申请人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake , Kohji Norimatsu
发明人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake , Kohji Norimatsu
IPC分类号： C09D5/23 , G11B5/708 , G11B5/71 , G11B5/82 , G11B5/70
CPC分类号： G11B5/71 , G11B5/7085 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/265
摘要： A magnetic recording disc having a high durability and good electromagnetic conversion characteristics which comprises a non-magnetic support and a magnetic layer provided on at least one surface of the support, wherein the magnetic layer comprises magnetic powder, a resinous binder, polishing particles and a lubricating agent, characterized in that the polishing particles have a Mohs' scale of hardness of not less than 7 and an average particle size of 0.25 r to 0.75 r (r being the thickness (.mu.m) of the magnetic layer) and the lubricating agent is a fatty acid ester having a melting point of not higher than 10.degree. C.
摘要翻译：一种具有高耐久性和良好的电磁转换特性的磁记录盘，包括设置在载体的至少一个表面上的非磁性载体和磁性层，其中磁性层包括磁性粉末，树脂粘合剂，抛光颗粒和润滑剂，其特征在于，研磨粒子的莫氏硬度为7以上，平均粒径为0.25〜0.75r（r为磁性层的厚度），润滑剂是熔点不高于10℃的脂肪酸酯。

2. 发明授权

US4820565A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4820565A
公开(公告)日：1989-04-11
申请号：US132686
申请日：1987-12-14
申请人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake
发明人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake
IPC分类号： G11B5/708 , C09C1/48 , C09D5/23 , C09D7/12 , G11B5/71 , G11B5/70
CPC分类号： G11B5/71 , Y10S428/90
摘要： A magnetic recording medium improved in durability over a wide range of temperature which comprises a substrate and a magnetic layer comprising magnetic powder and a resinous binder formed on the substrate, characterized in that the magnetic layer further comprises a monovalent alcohol ester of a fatty acid and a straight chain saturated fatty acid ester of not less than 28 carbon atoms in a weight proportion of 99:1 to 1:99 in a combined amount of 0.1 to 20 percent by weight based on the weight of the magnetic powder.
摘要翻译：一种在宽范围的温度范围内提高耐久性的磁记录介质，其特征在于，所述磁性层还包含脂肪酸的一价醇酯和含有磁性粉末的磁性层和包含磁性粉末的树脂粘结剂，重量比为99:1至1:99的不少于28个碳原子的直链饱和脂肪酸酯，其含量为0.1至20重量％，基于磁粉的重量。

3. 发明授权

US4696869A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4696869A
公开(公告)日：1987-09-29
申请号：US833200
申请日：1986-02-27
申请人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake
发明人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake
IPC分类号： G11B5/708 , C09D5/23 , G11B5/71
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/256 , Y10T428/257
摘要： A magnetic recording medium improved in durability at an elevated temperature which comprises a substrate and a magnetic layer comprising magnetic powder and a resinous binder formed on the substrate, characterized in that the magnetic layer further comprises an ester of a polyvalent alcohol with a fatty acid in an amount of 0.01 to 40 parts by weight to one part by weight of the magnetic powder.
摘要翻译：一种高温耐久性提高的磁记录介质，其特征在于，所述磁性层还包含多元醇与脂肪酸的酯，所述磁性层包含基材和包含磁性粉末的磁性层和形成在所述基材上的树脂粘合剂，相对于1重量份的磁性粉末为0.01〜40重量份。

4. 发明授权

US4690864A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4690864A
公开(公告)日：1987-09-01
申请号：US919021
申请日：1986-10-15
申请人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake , Kohji Norimatsu
发明人： Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake , Kohji Norimatsu
IPC分类号： G11B5/708 , C09D5/23 , G11B5/71
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording disc having a high durability and being rotatively driven with small starting torque which comprises a non-magnetic support and a magnetic layer provided on at least one surface of the support, the magnetic layer comprising magnetic powder, a resinous binder, (a) an ester of an unsaturated fatty acid of 8 to 18 carbon atoms with a monovalent or polyvalent, saturated or unsaturated alcohol of not more than 18 carbon atoms optionally substituted with at least one alkoxy group having not more than 8 carbon atoms and (b) a fatty acid ester of the formula: ##STR1## wherein R.sub.1 is a saturated or unsaturated aliphatic hydrocarbon group having 8 to 18 carbon atoms, R.sub.2 is an alkyl group having not more than 18 carbon atoms and n is an integer of 1 or more, the combined amount of the unsaturated fatty acid ester (a) and the fatty acid ester (b) being not less than 5 parts by weight to 100 parts by weight of the magnetic powder.
摘要翻译：一种磁性记录盘，其具有高的耐久性并且以小的起动转矩旋转地驱动，该磁性记录盘包括设置在载体的至少一个表面上的非磁性载体和磁性层，所述磁性层包含磁性粉末，树脂粘合剂，（）8-18个碳原子的不饱和脂肪酸的酯与任选被至少一个不超过8个碳原子的烷氧基取代的不超过18个碳原子的一价或多价饱和或不饱和醇，和（b）下式的脂肪酸酯：其中R1是具有8至18个碳原子的饱和或不饱和脂族烃基，R2是不大于18个碳原子的烷基，n是1或更大的整数，不饱和脂肪酸酯（a）和脂肪酸酯（b）的组合量相对于磁铁粉末100重量份为5重量份以上。

5. 发明授权

US4666769A Magnetic disc 失效
标题翻译：磁盘
公开(公告)号：US4666769A
公开(公告)日：1987-05-19
申请号：US776694
申请日：1985-09-16
申请人： Teruhisa Miyata , Akira Miyake , Masaya Funahashi
发明人： Teruhisa Miyata , Akira Miyake , Masaya Funahashi
IPC分类号： C09D5/23 , C09D109/02 , C09D121/00 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/71 , G11B5/73 , G11B5/738 , G11B5/68 , G11B5/82
CPC分类号： G11B5/7305 , G11B5/71 , Y10S428/90 , Y10T428/25 , Y10T428/2982 , Y10T428/30
摘要： A magnetic disc comprising a non-magnetic substrate, an undercoat coated on the surfaces of the substrate and a magnetic layer containing magnetic powder dispersed in a binder coated on the undercoat, characterized in that the undercoat has a thickness of from 0.5 to 10.0 .mu.m and such a porosity that a lubricant is contained therein in an amount of from 30 to 200 mg/cm.sup.3, which provides good surface lubricity and improved durability.
摘要翻译：一种磁盘，包括非磁性基底，涂覆在基底表面上的底涂层和含有分散在涂覆在底涂层上的粘合剂中的磁性粉末的磁性层，其特征在于底涂层的厚度为0.5至10.0μm 以及其中含有30至200mg / cm 3的润滑剂的孔隙率，其提供良好的表面润滑性和改善的耐久性。

6. 发明授权

US5256481A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5256481A
公开(公告)日：1993-10-26
申请号：US740877
申请日：1991-07-31
申请人： Akira Miyake , Mikio Kishimoto , Masaya Funahashi , Teruhisa Miyata , Hitoshi Nagatani
发明人： Akira Miyake , Mikio Kishimoto , Masaya Funahashi , Teruhisa Miyata , Hitoshi Nagatani
IPC分类号： G11B5/738 , H01F10/02
CPC分类号： G11B5/738 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium suitable for high density recording having improved erasing characteristics is produced by a method comprising the steps of forming an under coat layer containing an electrically conductive material on at least one surface of a substrate, applying a magnetic paint containing hexagonal system ferrite magnetic powder on the under coat layer and drying the applied magnetic paint to form a magnetic layer having a thickness of not larger than 0.7 .mu.m.
摘要翻译：适合于具有改进的擦除特性的高密度记录的磁记录介质是通过一种方法产生的，该方法包括以下步骤：在基材的至少一个表面上形成含有导电材料的底涂层，粉末涂布在外涂层上，干燥所施加的磁性涂料以形成厚度不大于0.7μm的磁性层。

7. 发明授权

US5774313A Magnetic disk which reduces deterioration in regenerated signals due to optical servo grooves 失效
标题翻译：磁盘，其减少由于光伺服槽造成的再生信号的劣化
公开(公告)号：US5774313A
公开(公告)日：1998-06-30
申请号：US515446
申请日：1995-08-15
申请人： Kenji Tanaka , Teruhisa Miyata , Akira Miyake , Nobuhiro Umebayashi
发明人： Kenji Tanaka , Teruhisa Miyata , Akira Miyake , Nobuhiro Umebayashi
IPC分类号： C09D5/23 , C09D7/12 , G11B5/56 , G11B5/596 , G11B5/73 , G11B5/82 , G11B13/04 , G11B21/10
CPC分类号： G11B5/82 , G11B5/59644 , G11B5/59677
摘要： A magnetic disk has optical servo grooves formed at specified intervals along data tracks so that variations in reflected light of light applied to the grooves are detected so as to allow a magnetic head to perform tracking servo. A level difference between a regenerative signal and a fundamental wave of modulation noise during reads of data recorded on the data tracks (4A, 4B) is set to 28 dB or more. Thus, comb-shaped modulation in a regenerative signal due to optical servo grooves is reduced so that output drop of the regenerative signal is suppressed and deterioration of window margin and the like is lessened.
摘要翻译：磁盘具有沿着数据轨道以规定的间隔形成的光学伺服槽，以便检测施加到槽的光的反射光的变化，以允许磁头执行跟踪伺服。在数据轨道（4A，4B）上记录的数据读取期间，再生信号与调制噪声基波之间的电平差被设定为28dB以上。因此，由于光伺服槽而导致的再生信号中的梳状调制被减小，从而抑制了再生信号的输出下降，并且缩小了窗口边缘等的劣化。

8. 发明授权

US5587860A Magnetic disc cartridge including a magnetic disc having a cleaning sheet composed of a non-theroplastic fiber 失效
标题翻译：磁盘盒包括具有由非基质纤维构成的清洁片的磁盘
公开(公告)号：US5587860A
公开(公告)日：1996-12-24
申请号：US363022
申请日：1994-12-23
申请人： Nobuhiro Umebayashi , Kunio Mizushima , Akira Miyake , Teruhisa Miyata
发明人： Nobuhiro Umebayashi , Kunio Mizushima , Akira Miyake , Teruhisa Miyata
IPC分类号： G11B5/708 , G11B5/71 , G11B23/033 , G11B23/50 , G11B23/03 , B32B5/16
CPC分类号： G11B5/708 , G11B23/0332 , G11B23/505 , G11B5/71
摘要： A magnetic disc cartridge comprising a cartridge case, a magnetic disc housed rotatably in the cartridge case, and a liner, which serves as a cleaning sheet, secured on the inner surface of the cartridge case, characterized in that the magnetic disc has a magnetic layer containing a ferromagnetic metal powder, a reinforcing powder, whose content is defined in the range of from 5 to 40% by weight, and a fatty acid ester with a melting point of 0.degree. C. or lower, and that at least the disc side surface layer of the cleaning sheet, which is brought into sliding contact directly with the magnetic layer, is almost entirely composed of rayon fiber, such that the magnetic disc cartridge of the present invention can provide a highly reliable magnetic disc cartridge having a magnetic disc which is excellent in durability and substantially error free.
摘要翻译：一种磁盘盒，包括盒壳体，可旋转地容纳在盒壳体中的磁盘，以及固定在盒壳体的内表面上的用作清洁片的衬垫，其特征在于，所述磁盘具有磁性层含有铁含量高的铁磁性金属粉末，含量为5〜40重量％的增强粉末和熔点为0℃以下的脂肪酸酯，至少该盘侧与磁性层直接滑动接触的清洁片的表面层几乎完全由人造纤维组成，使得本发明的磁盘盒可以提供具有磁盘的高可靠性磁盘盒，耐久性极佳，实质上无误差。

9. 发明授权

US5789062A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5789062A
公开(公告)日：1998-08-04
申请号：US74832
申请日：1993-06-15
申请人： Nobuhiro Umebayashi , Akira Miyake , Teruhisa Miyata , Yoshikazu Kai
发明人： Nobuhiro Umebayashi , Akira Miyake , Teruhisa Miyata , Yoshikazu Kai
IPC分类号： G11B5/55 , G11B5/596 , G11B5/706 , G11B5/708 , G11B5/71 , G11B5/74 , G11B5/82 , G11B5/855 , G11B7/007
CPC分类号： G11B5/825 , G11B5/5526 , G11B5/59677 , G11B5/706 , G11B5/708 , G11B5/71 , G11B5/74 , G11B5/855 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/257 , Y10T428/261 , Y10T428/265
摘要： In a magnetic recording medium in which light is applied to a magnetic head-tracking optical recess and a data track between these recesses so as to effect a tracking of a magnetic head in accordance with light reflected by them, variation in light reflectance is limited to not more than 4 dB in a frequency range of 100 Hz to 2 KHz and a thickness of the magnetic layer at the data track, or a depth of the recess is set to a specified range so that a tracking servo can be effected properly, thereby enhancing reliability of the magnetic recording medium.
摘要翻译： PCT No.PCT / JP92 / 01376 Sec。 371日期：1993年6月15日 102（e）日期1993年6月15日PCT 1992年10月22日提交在磁光记录介质中，其中光被施加到这些凹部之间的磁头跟踪光学凹槽和数据轨道，以便实现磁性跟踪根据它们反射的光，光反射率的变化在100Hz至2KHz的频率范围内被限制为不大于4dB，并且在数据轨道处的磁性层的厚度或凹陷的深度是设定为规定的范围，能够适当地进行跟踪伺服，从而提高磁记录介质的可靠性。

10. 发明授权

US4647502A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4647502A
公开(公告)日：1987-03-03
申请号：US776695
申请日：1985-09-16
申请人： Akira Miyake , Masaya Funahashi
发明人： Akira Miyake , Masaya Funahashi
IPC分类号： G11B5/71 , G11B5/70
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257
摘要： A magnetic recording medium which comprises a substrate and a magnetic layer comprising a magnetic powder, a resinous binder, a lubricant and optionally a non-magnetic abrasive being formed on at least one surface of the substrate, characterized in that the lubricant comprises an ester of an unsaturated higher fatty acid with an alcohol having 6 to 16 carbon atoms, which has improved wear resistance in a wide temperature range.
摘要翻译：一种磁记录介质，包括基材和磁性层，所述磁性层包含在所述基材的至少一个表面上形成的磁性粉末，树脂粘合剂，润滑剂和任选的非磁性研磨剂，其特征在于，所述润滑剂包含：具有6至16个碳原子的醇的不饱和高级脂肪酸在宽的温度范围内具有改善的耐磨性。

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