Copying or recording processes, using phenols

Details Copying or recording processes, using phenols Copying or recording processes, using phenols

G - Physics

03

C

42/1

G03C 1/58 (2006.01) B41M 5/333 (2006.01)

Patent

CA 1080967

ABSTRACT The invention relates to recording or copying materials comprising a carrier which is coated with a sensitive layer containing a chromogenic compound which is capable of reacting with a phenol, the said phenol being present in the sensitive layer in the form of phenyl- urethane which is capable of producing said phenol in situ. Recording or copying with such a material can be effected either by supplying energy, preferably thermal energy, or by bringing the material into contact with a liquid or gaseous fluid which is capable of reacting with the phenyl-urethane to liberate the phenol.

267099

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