Optical recording medium, optical recording method and optical recording device
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United States of America Patent
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May 18, 2004
Grant Date -
Aug 21, 2003
app pub date -
Jun 11, 2002
filing date -
Jun 14, 2001
priority date (Note) -
Expired
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Abstract
An optical recording medium having a substrate and at least a recording layer disposed on the substrate, the recording layer comprising at least one squarylium metal chelate compound which comprises a squarylium compound and a metal; and at least one azo metal chelate compound which comprises another metal and an azo compound expressed by the following formula (A-I): ##STR1## where A and B each independently expresses a residue forming one of a) a heterocyclic ring which may comprise a substituent and b) aromatic ring which may comprise a substituent, by combination with corresponding carbon atoms respectively bonded to A or B, and X expresses an active-hydrogen-containing substituent group. An optical recording method, and optical recording device using the same optical recording medium.
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