发明授权
US4719613A Optical recording medium having a reflective recording layer including a resinous binder and a naphthalocyanine dye 失效
具有包括树脂粘合剂和萘酞菁染料的反射记录层的光记录介质

Optical recording medium having a reflective recording layer including a
resinous binder and a naphthalocyanine dye
摘要:
An optical recording medium comprising practically a naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and --OR.sub.1, --OR.sub.2, --OR.sub.3 and --OR.sub.4 are the same or different and denote ether groups respectively having R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each of which is a saturated or unsaturated hydrocarbon group having 4-12 carbon atoms.
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