发明名称 OPTICAL INFORMATION RECORDING MEDIUM
摘要 PURPOSE:To provide an optical information recording medium having high sensitivity and reliability, by providing a recording layer comprising pressure- sensitive microcapsules containing a fluorescent substance coated with a shell comprising a substance for optically hiding the fluorescent substance. CONSTITUTION:A recording layer 7 in which pressure-sensitive microcapsules 3 containing a fluorescent substance coated with a film comprising a substance for optically hiding the fluorescent fubstance are dispersed in a binder layer 2 is provided on a base 1. The fluorescent substance may be fluoroscein, eosine or the like. The substance forming the shells of the pressure-sensitive microcapsules and optically hiding the fluorescent substance may be a copolymer of gelatine and an anionic high molecular weight compount. When this optical information recording medium is irradiated with laser light 8, the light is absorbed by a light-absorbing component in the binder layer 2 with the result of generation of heat, whereby an evaporable or expandable component in the recording layer is evaporated or expanded to generate a pressure, which breaks the microcapsules at an irradiated part 6, and optical characteristic at the irradiated part is changed, thereby achieving recording.
申请公布号 JPS62280082(A) 申请公布日期 1987.12.04
申请号 JP19860123280 申请日期 1986.05.30
申请人 CANON INC 发明人 IGARASHI SACHIKO;HIRAOKA MITSUO;IMATAKI HIROYUKI;OGAWA YOSHIHIRO;YOSHINO HITOSHI;KATO SEIJIRO
分类号 G11B7/243;B41M5/26;B42D15/10;G06K19/06;G11B7/24;G11B7/244 主分类号 G11B7/243
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