Process for the preparation of magnetic recording medium
    3.
    发明授权
    Process for the preparation of magnetic recording medium 失效
    制备磁记录介质的方法

    公开(公告)号:US4189508A

    公开(公告)日:1980-02-19

    申请号:US943123

    申请日:1978-09-18

    IPC分类号: G11B5/02 G11B5/845 H01F10/02

    CPC分类号: G11B5/845 G11B5/02

    摘要: A process for the preparation of a magnetic recording medium comprising;applying a magnetic coating material composed of dispersing a ferromagnetic fine powder in a high molecular binder onto the surfaces of a nonmagnetic support member to form a coating thereon;arraying one or more sets of magnet pairs on the sides of front and back surfaces of said support member, each of said magnet pairs being deviated by a predetermined distance in the moving direction of said support member such that said magnet pairs will not face to each other; andapplying a magnetic field in such a manner that the magnetic field applied to said coating by the magnet pairs arrayed on the side of the front surface of said support member is greater than the magnetic field applied to said coating by the magnet pairs arrayed on the side of the back surface of said support member, thereby satisfying the requirements ofDo.ltoreq.a,b wherein Do represents a distance between the surface of said support member and said magnet pairs, a an average distance between the magnets constituting said magnet pairs arrayed on the side of the front surface of said support member, and b an average distance between the magnets constituting said magnet pairs arrayed on the side of the back surface of said support member.

    摘要翻译: 一种制备磁记录介质的方法,包括: 将由铁磁性细粉末分散在高分子粘合剂中的磁性涂料施加到非磁性支撑构件的表面上以在其上形成涂层; 在所述支撑构件的前表面和后表面的侧面上排列一组或多组磁体对,每个所述磁体对在所述支撑构件的移动方向上偏离预定距离,使得所述磁体对将不面对每个 其他; 并施加磁场,使得排列在所述支撑构件的前表面侧上的磁体对施加到所述涂层的磁场大于通过排列在所述支撑构件的前面的磁体对施加到所述涂层的磁场 从而满足Do a的要求,其中Do表示所述支撑构件的表面与所述磁体对之间的距离,构成所述磁体对的磁体之间的平均距离 排列在所述支撑构件的前表面的侧面上,b是构成所述磁体对的磁体之间的平均距离,排列在所述支撑构件的后表面侧。

    Recording member
    6.
    发明授权
    Recording member 失效
    录音成员

    公开(公告)号:US4385305A

    公开(公告)日:1983-05-24

    申请号:US290562

    申请日:1981-08-06

    摘要: Disclosed is a recording member which comprises a substrate and a recording layer containing at least selenium and at least one element selected from the group consisting of tellurium and bismuth, wherein the selenium content is higher in the vicinity of the surface of the recording layer and/or in the vicinity of the interface between the recording layer and the substrate than the average selenium content in other portions. By virtue of the presence of this high selenium content portion, the oxidation resistance and water resistance are improved, and a recording member having stable characteristics can be obtained.

    摘要翻译: 公开了一种记录部件,其包括基板和至少含有硒和至少一种选自碲和铋的元素的记录层,其中硒含量在记录层的表面附近较高,和/ 或者在记录层和基板之间的界面附近,而不是其它部分的平均硒含量。 由于存在这种高硒含量部分,耐氧化性和耐水性得到改善,并且可以获得具有稳定特性的记录元件。