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19 条记录 (耗时 0.019 秒)

    Laminated film and magnetic recording medium made therewith
    1.
    发明授权
    Laminated film and magnetic recording medium made therewith 失效
    层压膜和由其制成的磁记录介质

    公开(公告)号：US4568599A

    公开(公告)日：1986-02-04

    申请号：US473448

    申请日：1983-03-09

    申请人： Masaaki Ono ,  Yasuki Miura ,  Masahiko Motegi ,  Kazuo Okabe

    发明人： Masaaki Ono ,  Yasuki Miura ,  Masahiko Motegi ,  Kazuo Okabe

    IPC分类号： G11B5/64 ,  G11B5/72

    CPC分类号： G11B5/64 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24388 ,  Y10T428/24405 ,  Y10T428/24421 ,  Y10T428/24446 ,  Y10T428/24851 ,  Y10T428/31663 ,  Y10T428/31786 ,  Y10T428/31797 ,  Y10T428/31801

    摘要： A laminated film for a super-high density magnetic recording medium, which comprises (A) a layer composed of a thermoplastic resin and (B) a layer of a thermoplastic resin containing fine particles therein. In this laminated film, the outer surface of the layer (A) has a surface roughness of less than 0.005.mu. as expressed as the Ra value, and the outer surface of the layer (B) has a surface roughness of 0.005 to 0.040.mu. as expressed as the Ra value. The outer surface of the layer (B) has either (i) a plurality of depressions and a plurality of protrusions, which are formed thereon in a configuration such that at least one protrusion exists within each depression or at least one protrusion exists in the area where two or more depressions are contiguous to each other, or (ii) protrusions on a flat plane and a covering layer (C) composed of a lubricant, which is formed on the surface of the layer (B). This covering layer (C) may be formed on the surface having the above-mentioned depressions and protrusions. The covering layer (C) is a continuous film layer or a discontinuous film layer formed of worm-like nodules. When a ferromagnetic metal thin film is formed on the surface of the layer (A) by vacuum evaporation and a protective film layer is formed on this thin film, there is obtained a vacuum-deposited video tape excellent in running properties and electromagnetic transformation performance. In this vacuum-deposited video tape, the transfer of the surface configuration due to the coarseness of the running surface can be prevented.

    摘要翻译： 一种用于超高密度磁记录介质的叠层膜，其包含（A）由热塑性树脂构成的层和（B）含有微粒的热塑性树脂层。 在该层压膜中，层（A）的外表面的表面粗糙度表示为Ra值小于0.005μm，层（B）的外表面的表面粗糙度为0.005〜0.040μm， 表示为Ra值。 层（B）的外表面具有（i）多个凹部和多个突起，其形成在其上，使得在每个凹部内存在至少一个突起，或者在该区域中存在至少一个突起 其中两个或更多个凹陷彼此邻接，或（ii）平坦平面上的突起和由形成在层（B）的表面上的润滑剂构成的覆盖层（C）。 该覆盖层（C）可以形成在具有上述凹陷和突起的表面上。 覆盖层（C）是由蠕虫状结节形成的连续膜层或不连续膜层。 当通过真空蒸发在层（A）的表面上形成铁磁性金属薄膜并在该薄膜上形成保护膜层时，获得了运行性能和电磁转换性能优异的真空沉积磁带。 在这种真空沉积的录像带中，可以防止由于行驶表面的粗糙度导致的表面形状的传递。

    Base film for magnetic recording tape with F-5 values of 9-15 Kg/mm.sup.2
    6.
    发明授权
    Base film for magnetic recording tape with F-5 values of 9-15 Kg/mm.sup.2 失效
    F-5值为9-15 Kg / mm2的磁记录胶带底胶

    公开(公告)号：US4508782A

    公开(公告)日：1985-04-02

    申请号：US625185

    申请日：1984-06-27

    申请人： Yasuki Miura ,  Masahiko Motegi ,  Kazuo Okabe

    发明人： Yasuki Miura ,  Masahiko Motegi ,  Kazuo Okabe

    IPC分类号： G11B5/73 ,  H01F10/00

    CPC分类号： G11B5/7305 ,  Y10S428/91 ,  Y10T428/31

    摘要： A base film for a magnetic recording tape is provided, which possesses an F-5 value of 9-15 Kg/mm.sup.2 as measured along both the longitudinal and transverse directions and in which the ratio of the average surface roughness to the particle size of included particles is 2.0.times.10.sup.-3 to 5.1.times.10.sup.-3. The average surface roughness is preferably 0.005-0.040 micron. The magnetic recording tape made therefrom exhibits an improved running property and an improved abrasion resistance as well as good surface characteristics.

    摘要翻译： 提供一种用于磁记录带的基膜，其具有沿纵向和横向测量的9-15Kg / mm 2的F-5值，其中平均表面粗糙度与所包含的颗粒尺寸的比率 颗粒为2.0×10 -3〜5.1×10 -3。 平均表面粗糙度优选为0.005-0.040微米。 由此制成的磁记录带具有改进的运行性能和改进的耐磨性以及良好的表面特性。

    Super high density magnetic recording medium
    8.
    发明授权
    Super high density magnetic recording medium 失效
    超高密度磁记录介质

    公开(公告)号：US4489117A

    公开(公告)日：1984-12-18

    申请号：US413125

    申请日：1982-08-30

    申请人： Masaaki Ono ,  Masahiko Motegi ,  Kazuo Okabe

    发明人： Masaaki Ono ,  Masahiko Motegi ,  Kazuo Okabe

    IPC分类号： G11B5/64 ,  G11B5/78

    CPC分类号： G11B5/64 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24388 ,  Y10T428/24405 ,  Y10T428/24421 ,  Y10T428/24446 ,  Y10T428/24851 ,  Y10T428/31663 ,  Y10T428/31678 ,  Y10T428/31786 ,  Y10T428/3179 ,  Y10T428/31797

    摘要： A super high density magnetic recording medium is provided, which comprises a polyester film and a discontinuous film formed on at least one surface of the polyester film. The discontinuous film has a thickness of smaller than 500 angstroms and is composed mainly of a water-soluble polymer, a silane coupling agent, and if desired, a silicone resin. A high density magnetic recording medium is also provided, which comprises a ferromagnetic metal thin film formed on the discontinuous film layer of the polyester base film. The polyester base film is especially suitable for formation of a metallized video tape, and this tape is excellent in the slip characteristics and abrasion resistance and advantageous in that noises and drop-out are reduced.

    摘要翻译： 提供了一种超高密度磁记录介质，其包括在聚酯膜的至少一个表面上形成的聚酯膜和不连续膜。 不连续膜的厚度小于500埃，主要由水溶性聚合物，硅烷偶联剂，以及需要时构成有机硅树脂组成。 还提供了一种高密度磁记录介质，其包括形成在聚酯基膜的不连续膜层上的强磁性金属薄膜。 聚酯基膜特别适用于金属化录像带的形成，并且该胶带具有优异的滑动特性和耐磨性，并且有利于降低噪声和脱落。

    Polyester film and magnetic recording medium
    10.
    发明授权
    Polyester film and magnetic recording medium 失效
    聚酯薄膜和磁记录介质

    公开(公告)号：US5047278A

    公开(公告)日：1991-09-10

    申请号：US296053

    申请日：1989-01-06

    申请人： Masaaki Ono ,  Takao Izasa ,  Kazuo Okabe

    发明人： Masaaki Ono ,  Takao Izasa ,  Kazuo Okabe

    IPC分类号： C08G63/86 ,  C08J5/18 ,  C08J7/04 ,  G11B5/73

    CPC分类号： C08J5/18 ,  C08G63/863 ,  C08J7/047 ,  G11B5/7305 ,  C08J2367/02 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/31786

    摘要： A polyester which is prepared by using a germanium compound as the polymerization catalyst, in which the Young's modulus E.sub.MD in the machine direction and the Young's modulus E.sub.TD in the transverse direction satisfy the requirements of E.sub.MD .gtoreq.350 kg/mm.sup.2, E.sub.TD .gtoreq.350 km/mm.sup.2 and E.sub.MD .times.E.sub.TD .gtoreq.250,000 kg.sup.2 /mm.sup.4, the refractive index n.sub.ZD in the thickness direction satisfies the requirement of 1.480.gtoreq.n.sub.ZD .gtoreq.1.492, and the maximum roughness Rt of at least one surface satisfies the requirement of Rt.gtoreq.100 nm, is valuable as a base film for a magnetic recording medium. A laminate structure of a polyester layer A and a polyester layer B is also used as a base film for a magnetic recording medium, in which the above requirements of E.sub.MD, E.sub.tD and n.sub.ZD are satisified, fine particles are incorporated in the layer B, the outer surface of the layer A satisfies the requirement of Rt .gtoreq.100 nm and Rt of the outer surface of the layer B is in the range of from 30 to 150 nm. A magnetic recording medium having a ferromagnetic metal thin film formed thereon, which is prepared by using this polyester film has a good processability at the preparation and shows a reduced drop-out, and this magnetic recording medium is scratched only to a negligible extent by contact with a magnetic head and does not damage the magnetic head.