摘要 |
An optical recording medium including a substrate having thereon a recording layer containing a dye precursor, a color developer reactable with the dye precursor to develop a color, and a light absorbent for converting light to heat, characterized in that the color developer is at least one compound of Formula (1):(R-NH (C=S) NH)n-Z(1)(wherein R denotes a substituted or unsubstituted alkyl, cycloalkyl, aryl, aralkyl, or alkenyl. n is an integer of 2 or more, and Z denotes a group having a valence of 2 or more.). The optical recording medium is superior in heat resistance and plasticizer resistance of the recorded image, heat resistance of background, water resistance, and moisture resistance.).
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申请人 |
NIPPON PAPER INDUSTRIES CO., LTD. |
发明人 |
MINAMI, TOSHIAKI;NAGAI, TOMOAKI;HAMADA, KAORU;SEKINE, AKIO;SATAKE, TOSHIMI;TAKANO, TOSHIYUKI;HAYASAKA, HIDEKI |