发明名称 |
MAGNETISCHES SPEICHERELEMENT UND VERFAHREN ZU SEINER HERSTELLUNG |
摘要 |
A magnetic recording element made in accordance with the present invention comprises a layer of magnetic material applied to a carrier formed from a material of high magnetic permeability. A layer of non-ferrous, non-magnetic material is interposed between the carrier and the layer of magnetic material. The layer of non-magnetic material has a thickness between 20 and 40 microns. The magnetic recording element enables sharply defined magnetized domains to be obtained and is in a simple and repeatable fashion, by using a process in which the materials applied to the carrier of the element undergo no chemical transformation. To this end, the non-magnetic layer is produced by successively depositing, on the carrier which is used as a cathode, a first layer of copper obtained from an alkaline electrolytic solution, and then a second layer of copper which is obtained from an acid electrolytic solution. |
申请公布号 |
DE2839046(A1) |
申请公布日期 |
1979.03.15 |
申请号 |
DE19782839046 |
申请日期 |
1978.09.07 |
申请人 |
COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE CII-HONEYWELL BULL |
发明人 |
MORIZOT,HENRI;LUCAN,ANDRE |
分类号 |
G03G5/00;G03G5/16;G03G19/00;G11B5/667;G11C11/14;H01F41/14;(IPC1-7):G11B5/70;G06K15/14 |
主分类号 |
G03G5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|