Presensitized plate for use in lithography including a diazo...

Details Presensitized plate for use in lithography including a diazo... Presensitized plate for use in lithography including a diazo...

G - Physics

03

F

96/189, 96/2

G03F 7/08 (1980.01)

Patent

CA 1171713

ABSTRACT OF THE DISCLOSURE A presensitized plate adapted for use in lithography comprising a support member with a metal surface, e.g. aluminum metal, and overlying layer containing a diazo compound. In accordance with this invention, the relative exposure sensitivity of the diazo compound is improved by pretreatment to accelerate its reactivity in the presence of actinic light. One method of pretreatment involves preheating the diazo compound to a temperature above about 35°C up to about 120°C. The improved lithographic plate and the process of preparing plate are claimed.

383693

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