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1. 发明授权

US6010765A Aromatic polyamide film 失效
标题翻译：芳香族聚酰胺薄膜
公开(公告)号：US6010765A
公开(公告)日：2000-01-04
申请号：US946817
申请日：1997-10-08
申请人： Akimitsu Tsukuda , Kazumasa Yoneyama , Nobuaki Ito
发明人： Akimitsu Tsukuda , Kazumasa Yoneyama , Nobuaki Ito
IPC分类号： G11B5/73 , G11B5/733 , G11B5/738 , G11B5/704
CPC分类号： G11B5/733 , G11B5/73 , G11B5/738 , Y10S428/90 , Y10T428/24355 , Y10T428/24942 , Y10T428/31721 , Y10T428/31725
摘要： The present invention relates to a film made of an aromatic polyamide having excellent running property, durability and output characteristics when combined with a magnetic medium, and having excellent heat resistance, the number of large protrusions per 100 cm.sup.2 H2 on one surface of the film and the number of large protrusions per 100 cm.sup.2 H3 on the opposite surface of the film satisfy the relationships of:H2.ltoreq.502.ltoreq.H3.ltoreq.100, andthe tensile Young's modulus E20 at 20.degree. C. in at least one direction and the tensile Young's modulus E100 at 100.degree. C. in the same direction satisfy the relationships of:E20.gtoreq.800 kg/mm.sup.20.5.ltoreq.E100/E20.
摘要翻译：本发明涉及一种由芳族聚酰胺制成的薄膜，其具有优异的运行性能，耐久性和输出特性，当与磁性介质组合时，具有优异的耐热性，在膜的一个表面上每100cm 2 H 2的大突起数量以及在膜的相对表面上每100cm 3 H3的大突起的数量满足以下关系：H2 / = 800kg / mm2 0.5

2. 发明授权

US5976668A Base film for magnetic recording medium and magnetic recording medium using same 失效
标题翻译：用于磁记录介质的基膜和使用其的磁记录介质
公开(公告)号：US5976668A
公开(公告)日：1999-11-02
申请号：US920568
申请日：1997-08-29
申请人： Kazunobu Chiba , Jota Ito , Tsutomu Takeda , Shinichi Matsumura
发明人： Kazunobu Chiba , Jota Ito , Tsutomu Takeda , Shinichi Matsumura
IPC分类号： G11B5/73 , G11B5/738 , G11B5/704
CPC分类号： G11B5/7325 , G11B5/73 , G11B5/738 , Y10S428/90 , Y10T428/24355 , Y10T428/24942 , Y10T428/31678
摘要： A base film for a magnetic recording medium including one surface, on which a magnetic layer can be formed, having a surface roughness of center line average roughness Ra of 10 nm or less, a ten-point average roughness Rz of 80 nm or less and a maximum height Rmax of 150 nm or less. The base film includes the other surface having a surface roughness of center line average roughness Ra of 4.5 to 20 nm, a ten-point average roughness Rz of 35 to 350 nm and a maximum height Rmax of 40 to 400 nm.
摘要翻译：一种用于磁记录介质的基膜，包括其中可以形成磁性层的一个表面，其中心线平均粗糙度Ra的表面粗糙度为10nm以下，十点平均粗糙度Rz为80nm以下，最大高度Rmax为150nm以下。基膜包括中心线平均粗糙度Ra的表面粗糙度为4.5〜20nm，十点平均粗糙度Rz为35〜350nm，最大高度Rmax为40〜400nm的另一面。

3. 发明授权

US5529832A Biaxially oriented laminated polyester film 失效
标题翻译：双轴取向叠层聚酯薄膜
公开(公告)号：US5529832A
公开(公告)日：1996-06-25
申请号：US338814
申请日：1994-11-10
申请人： Shigeyoshi Masuda , Masami Etchu
发明人： Shigeyoshi Masuda , Masami Etchu
IPC分类号： B32B27/36 , G11B5/73 , G11B5/738 , G11B5/78 , G11B23/00 , G11B5/704
CPC分类号： G11B5/78 , B32B27/36 , G11B5/7305 , G11B5/733 , G11B5/738 , Y10S428/90 , Y10S428/906 , Y10S428/91 , Y10T428/24942 , Y10T428/259 , Y10T428/26 , Y10T428/31797
摘要： A biaxially oriented laminated polyester film comprising a first polyester surface layer having (a1) a central line average roughness R.sub.aA of 1 to 7.9 nm, (b1) a 10-points average roughness R.sub.ZA of 15 to 400 nm and (c1) an R.sub.ZA /R.sub.aA ratio of 11-51, and a second polyester surface layer having (a2) a central line average roughness R.sub.aB which is greater than R.sub.aA and is 5 to 40 nm, (b2) a 10-points average roughness R.sub.ZB of 75 to 600 nm and (c2) an R.sub.ZB /R.sub.aB ratio of 20 or less, and satisfying the relationship between the first polyester surface layer and the second polyester surface layer, which is represented by the following expressions,R.sub.aA .times.R.sub.aB
摘要翻译：一种双轴取向叠层聚酯薄膜，其特征在于，具有：（a1）中心线平均粗糙度RaA为1〜7.9nm的第一聚酯表面层，（b1）15〜400nm的10点平均粗糙度RZA和（c1）RZA / RaA比为11-51，第二聚酯表面层的（a2）中心线平均粗糙度RaB大于RaA且为5〜40nm，（b2）平均粗糙度RZB为75〜600nm 和（c2）RZB / RaB比为20以下，满足由下述式表示的第一聚酯表面层与第二聚酯表面层之间的关系：RaAxRaB <50（1）RZAxRZB = 130〜3,000 （2）。该双轴取向叠层聚酯膜在用于磁性膜时的润滑性，高速吸收性，加工性和电磁特性优异，特别适用于磁记录介质的基膜。

4. 发明授权

US4803106A Disc-shaped carrier body for a recording medium and method for manufacturing same 失效
标题翻译：用于记录介质的盘形载体体及其制造方法
公开(公告)号：US4803106A
公开(公告)日：1989-02-07
申请号：US72119
申请日：1987-07-10
申请人： Armin Lenhart , Karl-Rupprecht Hub
发明人： Armin Lenhart , Karl-Rupprecht Hub
IPC分类号： G11B5/73 , G11B5/704
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24355 , Y10T428/315
摘要： A disc-shaped nonmagnetic support body for a recording medium which can be magnetized particularly (vertically) has at least one flat side with a very smooth surface, on which at least one magnetizable storage layer can be placed. It should be possible to provide this carrier body readily with appropriate surfaces, and it should be dimensionally stable and sufficiently fracture-proof. A chemically hardened glass substrate is therefore provided which comprises, besides Na.sup.+ ions, K.sup.+ ions incorporated in zones near the surface and in addition Ag.sup.+ ions and/or Ag atoms. For hardening this glass substrate by means of an ion exchange process below the transformation temperature characteristic of the glass material, the substrate is advantageously placed for a predetermined time in a KNO.sub.3 melt, to which advantageously, maximally 10% by weight AgNO.sub.3 has been added. In addition, the still hot glass substrate taken from the melt again, is advantageously placed in a water vapor atmosphere of above 115.degree. C.
摘要翻译：可以特别（垂直）被磁化的用于记录介质的盘形非磁性支撑体具有至少一个具有非常光滑表面的平坦侧面，其上可放置至少一个可磁化存储层。应该能够容易地提供这种载体的合适的表面，并且它应该是尺寸稳定的和足够的抗断裂的。因此，提供化学硬化的玻璃基板，除了Na +离子之外，还包括结合在表面附近的区域中，并且还包含Ag +离子和/或Ag原子的K +离子。为了通过低于玻璃材料的转变温度特性的离子交换工艺来硬化该玻璃基板，将衬底有利地在KNO 3熔体中放置预定时间，其中有利地最大程度地加入10重量％的AgNO 3。此外，再次从熔体中取出的仍然热的玻璃基板有利地放置在高于115℃的水蒸气气氛中

5. 发明授权

US4781963A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4781963A
公开(公告)日：1988-11-01
申请号：US038898
申请日：1987-04-16
申请人： Shigeo Utsumi , Shigeyuki Watanabe
发明人： Shigeo Utsumi , Shigeyuki Watanabe
IPC分类号： B32B27/36 , B29C55/14 , B29D7/01 , C08J5/18 , C08L67/00 , G11B5/73 , G11B5/733 , G11B5/704
CPC分类号： C08J5/18 , B29C55/143 , G11B5/7305 , C08J2367/00 , Y10S428/90 , Y10T428/24355 , Y10T428/24372 , Y10T428/24405 , Y10T428/24413 , Y10T428/24421 , Y10T428/25 , Y10T428/254 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/31786
摘要： Disclosed herein is a magnetic recording medium comprising a biaxially oriented polyester film having an extremely low surface roughness and containing fine particles and specific higher aliphatic carboxylic acids and/or derivatives thereof, and a magnetic layer formed on one side of the polyester film.The magnetic recording medium exhibits a stable travelling nature even when it is not provided with a back coat layer, and is usable as a high-quality and high-density magnetic recording medium.
摘要翻译：本文公开了一种磁记录介质，其包含具有极低表面粗糙度并含有微粒和特定高级脂族羧酸和/或其衍生物的双轴取向聚酯膜，以及形成在聚酯膜一侧的磁性层。即使没有设置背涂层，磁记录介质表现出稳定的行进性质，并且可用作高质量和高密度的磁记录介质。

6. 发明授权

US4728563A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4728563A
公开(公告)日：1988-03-01
申请号：US898421
申请日：1986-08-20
申请人： Shinji Saito , Hiroshi Ogawa , Chiaki Mizuno , Yasuo Tamai
发明人： Shinji Saito , Hiroshi Ogawa , Chiaki Mizuno , Yasuo Tamai
IPC分类号： G11B5/70 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/704
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24942 , Y10T428/2978
摘要： A magnetic recording medium in the form of tape such as an audio-tape or a video-tape comprising a flexible support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, which is characterized in that said magnetic recording medium has dynamic modulus of not lower than 4.5.times.10.sup.10 dyne/cm.sup.2 in the longitudinal direction at 110.degree. C.
摘要翻译：磁带式磁记录介质，例如音频带或录像带，其中包括柔性支撑件和设置在所述支架上的磁记录层，所述磁记录层包括分散在粘合剂中的铁磁性粉末，其特征在于因为所述磁记录介质在110℃下的纵向的动态模量不低于4.5×10 10达因/ cm 2。

7. 发明授权

US4725470A Magnetic disk medium 失效
标题翻译：磁盘介质
公开(公告)号：US4725470A
公开(公告)日：1988-02-16
申请号：US911235
申请日：1986-09-24
申请人： Toshiyuki Katsuki
发明人： Toshiyuki Katsuki
IPC分类号： G11B5/62 , G11B5/73 , G11B5/733 , G11B5/82 , G11B5/704 , G11B5/64
CPC分类号： G11B5/825 , G11B5/7325 , G11B5/82 , Y10S428/90 , Y10T428/24537 , Y10T428/249958
摘要： A magnetic disk medium having a magnetic layer formed on its substrate, is characterized in that in a portion of the substrate where a magnetic head runs is formed a concave groove in which a cushion material is provided, whereby the contact pressure appearing between it and the magnetic head is lowered.Preferably, the cushion material is either plastic foam selected from the group consisting of polyurethane foam, polystyrene foam, cellular polyethylene, cellular rubber, cellular polyvinyl chloride, and foamed polyester, or elastic silicone resin.
摘要翻译：具有形成在其基板上的磁性层的磁盘介质的特征在于，在形成有磁头的基板的一部分形成有设置有缓冲材料的凹槽，由此在其之间出现接触压力磁头降低。优选地，衬垫材料是选自聚氨酯泡沫，聚苯乙烯泡沫，多孔聚乙烯，多孔橡胶，多孔聚氯乙烯，发泡聚酯或弹性硅树脂的塑料泡沫。

8. 发明授权

US5998002A High-density magnetic recording medium 失效
标题翻译：高密度磁记录介质
公开(公告)号：US5998002A
公开(公告)日：1999-12-07
申请号：US844890
申请日：1997-04-22
申请人： Takashi Harada , Chikakazu Kawaguchi
发明人： Takashi Harada , Chikakazu Kawaguchi
IPC分类号： G11B5/70 , G11B5/738 , G11B5/84 , G11B5/704
CPC分类号： G11B5/738 , G11B5/70 , G11B5/84 , G11B5/8404 , Y10T428/24975 , Y10T428/25 , Y10T428/265 , Y10T428/31786
摘要： The present invention relates to a magnetic recording medium comprising:as a support film a biaxially oriented polyester film comprisinga polyester base film anda coating layer provided on the surface of the base film during the film forming process, anda magnetic layer comprising a magnetic substance dispersed in a resin binder, formed on the surface of said coating layer andhaving the thickness t (.mu.m) of said coating layer, the thickness tM (.mu.m) of said magnetic layer and the average center line roughness (sRa (nm)) of the surface of said magnetic layer, which satisfy the following formulae (1)-(4);0.01.ltoreq.tM.ltoreq.2.0 (1)0.05.ltoreq.t.ltoreq.1.39 (2)0.1
摘要翻译：磁记录介质技术领域本发明涉及一种磁记录介质，包括：作为支撑膜，在成膜过程中，作为支撑膜，包含聚酯基膜和设置在基膜表面上的涂层的双轴取向聚酯膜，以及包含磁性形成在所述涂层的表面上并具有所述涂层的厚度t（μm）的树脂粘合剂中的物质，所述磁性层的厚度tM（μm）和平均中心线粗糙度（sRa（nm ）满足下列公式（1） - （4）的所述磁性层的表面; 0.01

9. 发明授权

US5792548A Magnetic recording medium having a magnetic layer and an intermediate layer of specified composition 失效
标题翻译：具有磁性层和具有特定组成的中间层的磁记录介质
公开(公告)号：US5792548A
公开(公告)日：1998-08-11
申请号：US610094
申请日：1996-02-29
申请人： Takayoshi Kuwajima , Tsunehiko Ikarashi , Yuko Motegi
发明人： Takayoshi Kuwajima , Tsunehiko Ikarashi , Yuko Motegi
IPC分类号： G11B5/66 , C09C1/48 , C09D5/23 , C09D7/12 , G11B5/70 , G11B5/738 , G11B5/704
CPC分类号： G11B5/70 , G11B5/738 , Y10S428/90 , Y10T428/24967 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium having an intermediate layer excellent in conductivity, surface properties and strength, and excellent in electromagnetic characteristics, physical properties, etc., which comprises a non-magnetic intermediate layer having a thickness of 0.5 .mu.m to 3.0 .mu.m formed on at least one surface of a non-magnetic support, and a magnetic layer formed on the intermediate layer, the magnetic layer being mainly composed of a ferromagnetic powder and a binder and having a thickness of 0.1 .mu.m to 0.5 .mu.m, in which said magnetic layer is formed on the intermediate layer at least in a dry state, and the intermediate layer comprises (A) an inorganic material having an average particle size of 10 nm to 50 nm and a Mohs' hardness of 7 or less, (B) an inorganic material having an average particle size of 100 nm to 500 nm and a Mohs' hardness of 9 or more, (C) carbon black, a lubricant and a binder.
摘要翻译：一种具有导电性，表面性质和强度优异，电磁特性，物理性能优异的中间层的磁记录介质，其包含厚度为0.5μm至3.0μm的非磁性中间层，其形成于非磁性载体的至少一个表面和形成在中间层上的磁性层，磁性层主要由铁磁粉末和粘合剂组成，厚度为0.1μm至0.5μm，其中所述至少在干燥状态下在中间层上形成磁性层，中间层包含（A）平均粒度为10nm〜50nm，莫氏硬度为7以下的无机材料，（B）平均粒径为100nm〜500nm，莫氏硬度为9以上的无机材料，（C）炭黑，润滑剂和粘合剂。

10. 发明授权

US5725943A Magnetic tape cartridge 失效
标题翻译：磁带盒
公开(公告)号：US5725943A
公开(公告)日：1998-03-10
申请号：US222341
申请日：1994-04-04
申请人： Junichi Hirata , Sadamu Kuse , Seigi Kawarai
发明人： Junichi Hirata , Sadamu Kuse , Seigi Kawarai
IPC分类号： G11B5/78 , C08J5/18 , C09D5/23 , G11B5/62 , G11B5/73 , G11B5/735 , G11B23/04 , G11B23/087 , G11B5/704
CPC分类号： C08J5/18 , G11B23/04 , G11B5/62 , G11B5/7305 , G11B5/735 , C08J2367/02 , Y10S428/90 , Y10T428/31786
摘要： A magnetic tape cartridge comprising a magnetic tape suitable for long time recording which has a coefficient of thermal shrinkage of 0.6% or less the coefficient being measured after the tape is wound around a hub at least 300 turns and kept at 105.degree. C. for 30 minutes.
摘要翻译：一种磁带盒，包括适于长时间记录的磁带，该磁带的热收缩系数在磁带缠绕在轮毂上之后测量的系数为0.6％或更小，并且在105℃下保持30秒分钟。

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