Method of manufacturing a magnetic head by photo-etching
    2.
    发明授权
    Method of manufacturing a magnetic head by photo-etching 失效
    通过光蚀刻制造磁头的方法

    公开(公告)号:US4224400A

    公开(公告)日:1980-09-23

    申请号:US708078

    申请日:1976-07-23

    摘要: A method of manufacturing a magnetic head wherein a pattern is formed in a nickel-iron layer by means of a photo-etching process. The nickel-iron layer is provided with an auxiliary layer of titanium, titanium oxide or silicon oxide and with a photolacquer layer in a pattern which corresponds to the pattern desired in the nickel-iron layer. The lacquer layer pattern does not cover a part of the auxiliary layer and serves as an etching mask for the simultaneous etching of the auxiliary layer and the nickel-iron layer.

    摘要翻译: 一种制造磁头的方法,其中通过光蚀刻工艺在镍 - 铁层中形成图案。 镍 - 铁层设置有钛,氧化钛或氧化硅的辅助层,并且具有对应于镍 - 铁层中期望的图案的图案的光镀层。 漆层图案不覆盖辅助层的一部分,并且用作用于辅助层和镍 - 铁层的同时蚀刻的蚀刻掩模。

    Dispenser cathode
    3.
    发明授权
    Dispenser cathode 失效
    分配器阴极

    公开(公告)号:US4350920A

    公开(公告)日:1982-09-21

    申请号:US165893

    申请日:1980-07-03

    CPC分类号: H01J1/28

    摘要: A compressed dispenser cathode having 1-15% by weight of Ba.sub.2 Sc.sub.2 O.sub.5 in a porous metal cathode body has an emission having a larger current density (exceeding 6 A/cm.sup.2) and a longer life (more than 3000 hours).

    摘要翻译: 在多孔金属阴极体中具有1-15重量%的Ba 2 Sc 2 O 5的压缩分配器阴极具有较大的电流密度(超过6A / cm 2)和更长寿命(超过3000小时)的发射。