公开(公告)号：US3883892A

公开(公告)日：1975-05-13

申请号：US40697273

申请日：1973-10-16

Applicant: BASF AG

Inventor： KNELLER ECKART ,  KOESTER EBERHARD ,  WUNSCH GERD ,  DEIGNER PAUL ,  GRAW DIETER

IPC: C09D5/23 ,  C09D7/12 ,  G03G5/16 ,  G11B5/02 ,  G11B5/62 ,  G11B5/64 ,  G11B5/70 ,  G11B5/706 ,  G11B23/28 ,  G01D15/12

CPC classification number: G11B23/281 ,  G03G5/16 ,  G11B5/64 ,  G11B5/70 ,  G11B5/706

Abstract: The invention relates to a method of recording magnetic signals on magnetic recording media containing an exchange-anisoptropic material at a temperature lower than, equal to or higher than the Neel temperature of this magnetic material. After the recording has been made, the magnetic recording medium is heated to a temperature equal to, or higher than, the Neel temperature, then cooled down to a temperature below the Neel temperature and the recording temperature, following which it is provided with an indicator which betrays re-heating. The method is suitable for the space-saving and, at the same time, authentic recording and storage of all data and images which are to be preserved without risk of falsification.

Abstract translation: 本发明涉及一种在低于等于或高于该磁性材料的Neel温度的温度下将磁信号记录在含有交换异向材料的磁记录介质上的方法。 在记录完成之后，将磁记录介质加热到等于或高于Neel温度的温度，然后冷却到低于Neel温度和记录温度的温度，随后设置有指示器 它背叛了再加热。