Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1988-06-06
1991-02-19
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430945, G03C 172, G11B 724
Patent
active
049943430
ABSTRACT:
The present invention relates to an optical information recording medium which comprises a support having provided thereon recording layer(s) on which information can be recorded and/or read out with a laser beam, wherein the recording layer contains at least one of the compounds represented by the following formula (I): ##EQU1## wherein .phi. and .PSI. each represents a heterocyclic residue having nitrogen atom(s), and L represents an optionally substituted methine group, or an optionally substituted trimethine, pentamethine, heptamethine or nonamethine group each formed by linkage through conjugated double bonds, provided that L and at least one of .phi. and .PSI. combine to form a ring; and X.sup.1 .theta. represents a 1-valent negative ion and l represents 1, 2 or 3, provided that X.sup.1 .theta. may bind to .phi., L or .PSI. as a substituent is provided by the invention.
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Adachi Keiichi
Inagaki Yoshio
Yabe Masao
Chea Thorl
Fuji Photo Film Co. , Ltd.
Michl Paul R.
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