公开(公告)号：DE2344644A1

公开(公告)日：1974-05-02

申请号：DE2344644

申请日：1973-09-05

Applicant: BASF AG

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

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

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.