Magnetic recording medium lubricated by a three component fatty acid
ester-fatty acid amide composition
    1.
    发明授权
    Magnetic recording medium lubricated by a three component fatty acid ester-fatty acid amide composition 失效
    由三组分脂肪酸酯 - 脂肪酸酰胺组合物润滑的磁记录介质

    公开(公告)号:US5091268A

    公开(公告)日:1992-02-25

    申请号:US546183

    申请日:1990-06-29

    CPC分类号: G11B5/725 G11B5/71 Y10S428/90

    摘要: A novel magnetic recording medium is provided comprising a non-magnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein at least one fatty acid amide compound represented by formula (I), at least one fatty acid ester represented by formula (II) and at least one fatty acid ester represented by formula (III) are provided in or on the magnetic layer: ##STR1## wherein R.sup.1 represents a C.sub.13-21 straight-chain saturated hydrocarbon group; ##STR2## wherein R.sup.2 represents a C.sub.12-21 straight-chain or branched saturated or unsaturated hydrocarbon group; and R.sup.3 represents a C.sub.1-10 straight-chain or branched saturated or unsaturated hydrocarbon group; ##STR3## wherein R.sup.4 represents a C.sub.12-21 straight-chain or branched saturated or unsaturated hydrocarbon group; R.sup.5 represents a C.sub.2-3 divalent hydrocarbon group; R.sup.6 represents a C.sub.1-10 straight-chain or branched saturated or unsaturated hydrocarbon group; and n represents an integer of from 1 to 10 where n may be the same or different when the magnetic layer contains two or more compounds represented by formula (III).

    摘要翻译: 提供了一种新颖的磁记录介质,其包括非磁性载体,其上设置有包含分散在粘合剂中的铁磁粉末的磁性层,其中至少一种由式(I)表示的脂肪酸酰胺化合物,至少一种脂肪酸酯代表 通过式(II)和至少一种由式(III)表示的脂肪酸酯提供在磁性层中或其上:其中R1表示C13-21直链饱和烃基; (II)其中R2代表C12-21直链或支链饱和或不饱和烃基; 并且R 3表示C 1-10直链或支链饱和或不饱和烃基; 其中R4代表C12-21直链或支链饱和或不饱和烃基; R5表示C2-3二价烃基; R6表示C1-10直链或支链饱和或不饱和烃基; n表示1〜10的整数,其中当磁性层含有两种或更多种由式(III)表示的化合物时,n可以相同或不同。

    Method for preparing a magnetic recording medium
    2.
    发明授权
    Method for preparing a magnetic recording medium 失效
    磁记录介质的制备方法

    公开(公告)号:US5015498A

    公开(公告)日:1991-05-14

    申请号:US462321

    申请日:1989-12-27

    CPC分类号: G11B5/71 G11B5/842

    摘要: A method for preparing a magnetic recording medium comprising a non-magnetic support having coated thereon a magnetic layer of a magnetic coating composition containing ferromagnetic metal particles and a binder, comprising at least (1) a step of mixing and dispersing ferromagnetic metal particles, a binder, and a solvent to prepare magnetic coating composition, (2) a step of adding and mixing lubricating agent therewith and (3) a step of coating the resulting magnetic coating composition on a non-magnetic support.

    摘要翻译: 一种制备磁性记录介质的方法,其包括在其上涂覆有含有铁磁性金属颗粒和粘合剂的磁性涂料组合物的磁性层的非磁性载体,该磁性涂层组合物至少包括(1)混合和分散铁磁性金属颗粒的步骤, 粘合剂和溶剂以制备磁性涂料组合物,(2)将润滑剂加入和混合的步骤和(3)在非磁性载体上涂覆所得磁性涂料组合物的步骤。

    Magnetic recording medium
    5.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4496626A

    公开(公告)日:1985-01-29

    申请号:US351561

    申请日:1982-02-23

    摘要: A magnetic recording medium for high-density recording, which comprises a non-magnetic substrate and a magnetic layer provided on the non-magnetic substrate and containing, as main constituents, ferromagnetic grains and a binder, wherein the non-magnetic substrate surface on the side adjoining the magnetic layer has a surface roughness higher than that of the back surface of the non-magnetic substrate. The substrate surface adjoining the magnetic layer has a surface roughness of 0.007.mu. or more, while the back surface has a surface roughness of 0.02.mu. or less, but in each particular application the roughness of the surface adjoining the magnetic layer is selected to be higher than that of the back surface.

    摘要翻译: 一种用于高密度记录的磁记录介质,其包括非磁性基板和设置在非磁性基板上的磁性层,并且作为主要成分含有铁磁性颗粒和粘合剂,其中,非磁性基板表面 与磁性层相邻的一侧的表面粗糙度高于非磁性基板的背面的表面粗糙度。 与磁性层相邻的基板表面的表面粗糙度为0.007μm以上,背面的表面粗糙度为0.02μm以下,但是在各特定的应用中,与磁性层相邻的表面的粗糙度选择为较高 比背面的。

    Magnetic recording medium
    6.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4455345A

    公开(公告)日:1984-06-19

    申请号:US457319

    申请日:1983-01-11

    摘要: A magnetic recording medium is disclosed. The medium is comprised of a support having a magnetic layer coated thereon. The magnetic layer is comprised of ferromagnetic metal powder and a binder. The ferromagnetic metal powder has a specific surface area of 35 to 70 m.sup.2 /g, a saturation magnetization (.sigma..sub.s) of 120 to 160 emu/g and a metal content of 75 to 98 wt %. The magnetic recording medium has a high S/N ratio, particularly a high video S/N ratio and has stable magnetic properties.

    摘要翻译: 公开了一种磁记录介质。 介质由其上涂覆有磁性层的载体组成。 磁性层由铁磁金属粉末和粘合剂组成。 铁磁性金属粉末的比表面积为35〜70m 2 / g,饱和磁化强度(sigma)为120〜160emu / g,金属含量为75〜98wt%。 磁记录介质具有高S / N比,特别是高视频S / N比,并具有稳定的磁特性。

    Magnetic tape magazine
    9.
    发明授权
    Magnetic tape magazine 失效
    磁带杂志

    公开(公告)号:US4030685A

    公开(公告)日:1977-06-21

    申请号:US605046

    申请日:1975-08-15

    IPC分类号: G11B23/087 G11B23/10

    CPC分类号: G11B23/087

    摘要: An elastic flexible belt is tensioned around feed-out and take-up tape convolutions in a magnetic tape magazine to press the convolutions inward and tightly wind the tape on cores. By the tension of the flexible belt provided around the tape convolutions, the tape is tightly wound on the cores and stably fed in the magazine, and accordingly, the edges of the tape are effectively aligned in the convolutions.

    摘要翻译: 弹性柔性带在磁带盒周围的送出和卷取带卷绕周围被张紧,以将卷入内压并将带紧紧地卷绕在芯上。 通过设置在带卷绕周围的柔性带的张力,带被紧密缠绕在芯上并稳定地馈送到盒中,因此,带的边缘在卷积中有效地对准。

    Magnetic recording medium
    10.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4784914A

    公开(公告)日:1988-11-15

    申请号:US944114

    申请日:1986-12-22

    摘要: A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on the support, said magnetic recording layer comprising a binder and a ferromagnetic powder dispersed therein, which is characterized in that said binder is composed of a resin component comprising:a vinyl chloride copolymer containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M is hydrogen or an alkali metal atom, and M' is any one of hydrogen, an alkali metal atom and a lower hydrocarbon group, and a repeating unit having an epoxy group; anda polyurethane resin containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M and M' have the same meanings as defined above.

    摘要翻译: 一种磁记录介质,包括设置在所述载体上的非磁性载体和磁记录层,所述磁记录层包含粘合剂和分散在其中的铁磁性粉末,其特征在于,所述粘合剂由树脂组分构成,所述树脂组分包括:氯乙烯 含有具有至少一个选自-SO 3 M,-OSO 3 M,-COOM和-PO(OM')2的极性基团的重复单元的共聚物,其中M是氢或碱金属原子,M'是任何一个 的氢,碱金属原子和低级烃基,以及具有环氧基的重复单元; 和含有至少一个选自-SO 3 M,-OSO 3 M,-COOM和-PO(OM')2的极性基团的重复单元的聚氨酯树脂,其中M和M'具有与上述相同的含义。