公开(公告)号：DE3580536D1

公开(公告)日：1990-12-20

申请号：DE3580536

申请日：1985-08-02

Applicant: BASF AG

Inventor： ETZBACH KARL-HEINZ DR ,  NEUMANN PETER DR ,  DUST MATTHIAS DR ,  RINGSDORF HELMUT PROF DR ,  SCHMIDT HANS-WERNER ,  BAUR GUENTER ,  WINDSCHEID FRIEDRICH ,  KIEFER RUDOLF

IPC: B41M5/26 ,  C09K19/38 ,  C09K19/40 ,  G02F1/13 ,  G11B7/24 ,  G11B7/244 ,  G11B7/245 ,  G11B7/248 ,  G11B7/25

Abstract: An optical recording medium contains, on a base, one or more dyes and a polymer which forms liquid-crystalline phases. The information is written into the uniformly oriented liquid-crystalline polymer layer, for example by means of a laser. During this procedure, the polymer heats up locally to above a phase transition temperature. By cooling, the resulting change is frozen in the glass state. The information can be erased by applying an electric field and/or heating. The recording material permits high-contrast storage and possesses high sensitivity, good resolution and excellent stability.