Nondiffusible azo dye-releasing compounds

A nondiffusible compound having at least one diffusible azo dye moiety, said compound having the formula:

• ##STR27## wherein:
• G is a metal chelating group, a salt thereof or a hydrolyzable precursor thereof;
• or a group which together with a ##STR28## group is CAR, said CAR being bonded to the benzene ring through the oxygen of said ##STR29## group;
• G.sup.1 is hydroxy, a salt thereof, or a hydrolyzable precursor thereof;
• Z is an electron withdrawing group having the formula --CON(R).sub.2, --SO.sub.2 N(R).sub.2, --COOR, --CN, SO.sub.2 R' or --COR', wherein R' is alkyl of 1 to 8 carbon atoms or aryl of 6 to 10 carbon atoms, and each R is H or R';
• Z' is alkyl of 1 to 8 carbon atoms, aryl of 6 to 10 carbon atoms or N(R).sub.2 ;
• CAR represents a ballasted carrier moiety which will release said diffusible azo dye as a function of development of a silver halide emulsion layer under alkaline conditions;
• and
• t is an integer of 0 to 1, with the proviso that the compound contains at least one but not more than two CAR groups.