Diazotype material containing a diazoimino compound

Details Diazotype material containing a diazoimino compound Diazotype material containing a diazoimino compound

G - Physics

03

C

96/160, 96/251

G03C 1/58 (2006.01) G03C 1/52 (2006.01)

Patent

CA 1066104

ABSTRACT OF THE DISCLOSURE A diazotype material, which comprises a supported light-sensitive layer comprising a light-sensitive, water-insoluble diazoimino compound of the formula: Image wherein R is an aryl group and R1 and R2 are organic radicals, which may be the same or different, or R1 and R2 together with the nitrogen atom to which they are attached form a heterocyclic group, an azo coupler, and an alkaline material, said diazoamino compound, when exposed to ultraviolet light, being reactive with said azo coupler to form a visible dye product only at pH great- er than 7. The diazotype material can be used for diazotype reproduction processes resulting in negative or direct positive images.

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