Media for optical information storage comprising an organic macr

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430945, 430944, 430 19, 430321, 430322, 430338, 430495, 430961, 430 17, 3461351, 346 76L, 540128, 540121, 540139, 540145, G03C 1492, C09B 4704

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ABSTRACT:
Provided is an information recording medium, e.g., an optical recording medium, and a method for recording information thereon. The information layer of the recording medium comprises an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, e.g., a naphthalocyanine having silicon as the hetero atom, which chromophore is substituted with at least one substituent conferring film forming properties to the chromophore, e.g., a monomer or oligomeric substituent comprised of acid, amide or ester units. The information layer thereby offers excellent thermomechanical properties and exhibits excellent absorption properties all in a single component material. By utilizing a single component material, the problem of dye/polymer phase separation frequently encountered in dye/polymer mixtures is also overcome.

REFERENCES:
patent: 3775423 (1973-11-01), Lamure
Schechtman, "Conducting Polymethallonaphthalocyaninas and Related Macrocyclic Compounds" Aug. 1983, Graduate Thesis, Aug. 1983, Case Western Reserve University.
Kuroiwa et al., "Reversible Read-Write . . . Media", Japanese Journal of Applied Physics, Part 1, vol. 22, No. 2, Feb. 1983, pp. 340-343.

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