Optical information recording medium using azo dyes
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United States of America Patent
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Dec 21, 1993
Grant Date -
N/A
app pub date -
Jun 26, 1992
filing date -
Jun 26, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is disclosed a recordable optical element that includes a metallized dye. The element has a transparent substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The improvement is that the dye is a metal complex of a tridentate azo dye ligand containing, on one side of the azo linkage, an aminohydroxypyridine group and on the other side, an aromatic ring including an electron withdrawing substituent. The dyes that are used in the element are very light stable.
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