Recording information media comprising chromophores
CA 1255656 A · Owner: Celanese Corporation · Inventors: Jones, R. Sidney, Jr.; Nikles, David E.; Kenney, Malcolm E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Provided is an information recording medium and a method for recording information thereon. The information layer of the recording medium comprises a naphthalocyanine chromophore e.g. a sulfonamidonaphthalocyanine having silicon or germanium as the central hetero atom. Information can thereby be readily recorded via a thermal deformation technique due to the effective absorption by the dye of light in the wavelength range of about 760-850 nm. The naphthalocyanine chromophores exhibit excellent chemical and photolytic stability, their use thereby increasing the useful life of the recording medium. Provided herein are also novel naphthalocyanine chromophore compounds which are useful in …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 2006.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.