Optical recording medium

Details Optical recording medium Optical recording medium

1985-08-09

1987-10-27

McCamish, Marion C.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

428 4, C09K 1900

Patent

active

047029455

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.

REFERENCES:
patent: 4402999 (1983-09-01), Tatsumichi et al.
patent: 4490015 (1984-12-01), Kawarada et al.
"Optical Storage Media", A. E. Bell, A. A. Jamberdino, Editors, Proc. SPIE 420, 194-199 (1983).

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