Olympus Optical Company, Ltd.

Seiji Kondo

Toshiyuki Kanno

Jun Kanehira

Yasuji Nagata

Naoyuki Ueno

Hideshi Takahashi

Yoshiko Uematsu

An optical recording medium such as an optical disk, which is capable of reversibly repeating a recording/erasing cycle. This optical recording medium comprises a transparent substrate and recording layer formed on the substrate. This recording layer comprise a liquid crystalline high polymer having side chains and a dyestuff having a recording-light absorbing property. The side chain may preferably comprises mesogen group, a monocyclic or polycyclic compound such as phenyl, benzyl, naphthyl or anthryl group, and alkyl or aryl group having 1 to 18 carbon atoms.

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Hachioji, Japan

Seiji Kondo