Stock material or miscellaneous articles – Circular sheet or circular blank
Patent
1998-04-27
2000-05-02
Evans, Elizabeth
Stock material or miscellaneous articles
Circular sheet or circular blank
428 644, 428 648, 428913, 43027014, 43027016, 4304951, 430945, 369283, 369288, B32B 300
Patent
active
060570202
ABSTRACT:
An optical recording medium has a substrate and a recording layer which is formed on the substrate and contains an azo metal chelate compound including an azo moiety of formula (I) and a bivalent or trivalent metal; ##STR1## wherein X is OH group, CooH group or CONH.sub.2 group; Y is a residual group forming a heterocyclic ring in combination with nitrogen atoms bonded thereto; and Z is a residual group forming an aromatic ring in combination with carbon atoms bonded thereto. In addition, there is provided a method of recording information and reproducing the information using the above-mentioned optical recording medium.
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Higashi Yasuhiro
Sasa Noboru
Sato Tsutomu
Tomura Tatsuya
Ueno Yasunobu
Evans Elizabeth
Ricoh & Company, Ltd.
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