Diazo imaging system

Details Diazo imaging system Diazo imaging system

G - Physics

03

C

96/23

G03C 5/00 (2006.01) G03C 1/67 (2006.01) G03C 5/18 (2006.01) G03C 5/56 (2006.01)

Patent

CA 1050325

DIAZO IMAGING SYSTEM Abstract of the Disclosure A method of producing an azo dye image by contacting an imagewise distribution of a material capable of catalyzing the decomposition of a base releasing complex of a transition metal in a hydrophilic matrix with a hydrophobic layer containing a diazonium compound in the presence of an azo dye forming cou- pler and an aqueous solution of the base releasing transition metal complex whereupon the base liberated by the decomposition of the base releasing complex initiates coupling between the dia- zonium compound and the azo dye forming coupler to produce an azo dye image corresponding to the imagewise distribution of the cata- lytic material in the matrix. According to a preferred embodi- ment, the catalytic material is silver and the transition metal complex is cobalt hexammine.

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