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
1986-07-31
1989-01-17
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
430495, 430945, 3461351, G11B 724, G01D 900, G03C 172, G03C 516
Patent
active
047987812
ABSTRACT:
Disclosed herein is a fabrication process of an optical recording medium permitting writing and reading-out of signals without any reflective layer. The medium is fabricated by coating, on a transparent thermoplastic resin substrate havnig pregrooves and pits or holes for preformatting signals, a dye solution of a phthalo
aphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and L.sub.1, L.sub.2, L.sub.3 and L.sub.4 mean individually a benzene or naphthalene ring skeleton which is unsubstituted or substituted by at least one monovalent substituent --Z selected from the class consisting of the following substituents: --R.sup.1, --OR.sup.2, --SiR.sup.3 R.sup.4 R.sup.5, --SR.sup.6, --COR.sup.7, --COOR.sup.8, --COHNR.sup.9, --NR.sup.10 R.sup.11, --R.sup.12 OR.sup.13, and --R.sup.14 X wherein R.sup.1 -R.sup.14 denote individually a hydrocarbon group having from 1 to 12 carbon atoms and X stands for a halogen atom.
REFERENCES:
patent: 4298975 (1981-11-01), van der Veen et al.
patent: 4471039 (1984-09-01), Boresberger et al.
patent: 4529688 (1985-07-01), Law et al.
patent: 4626496 (1986-12-01), Sato
patent: 4719613 (1988-01-01), Hirose et al.
Abe Kenji
Hirose Sumio
Hosono Yoichi
Ozawa Hiroshi
Buscher Mark R.
Michl Paul R.
Mitsui Toatsu Chemicals Incorporated
Yamamoto Chemicals Inc.
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