OPTICAL RECORDING MEDIUM AND ITS PRODUCTION

PURPOSE:To obtain an optical recording medium having a proper complex index of refraction in a prescribed wavelength region of laser light by forming a light absorbing layer based on compds. each having a prescribed compsn. on a substrate. CONSTITUTION:A light absorbing layer based on a metallophtha...

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Bibliographic Details
Main Author YASHIRO TORU
Format Patent
LanguageEnglish
Published 22.12.1995
Edition6
Subjects
COLOUR PRINTING
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
LINING MACHINES
PERFORMING OPERATIONS
PHYSICS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:PURPOSE:To obtain an optical recording medium having a proper complex index of refraction in a prescribed wavelength region of laser light by forming a light absorbing layer based on compds. each having a prescribed compsn. on a substrate. CONSTITUTION:A light absorbing layer based on a metallophthalocyanine compd. represented by formula I and a nitrogen-contg. compd. selected from among optionally substd. or cyclized amino, imino and azo compds. represented by formula II is formed on a substrate. In the formula II, R is 1-4C alkyl or 1-4C alkoxy and each of R -R is 1-4C alkyl, 1-4C alkoxy, halogen or H. The molecular association of the phthalocyanine compd. is inhibited and the objective optical recording medium having a proper complex index of refraction in the region of 760-800nm as the wavelength region of laser light is obtd.
Bibliography:Application Number: JP19940151482