Benzotriazole and heterocyclic ketimide activators for leuco compounds

Claim 1

A COMPOSITION WHICH PRINTS OUT A VISIBLE IMAGE DIRECTLY AS A RESULT OF EXPOSURE TO VISIBLE LIGHT SAID COMPOSITION COMPRISING AN INTIMATE MIXTURE CONSISTING ESSENTIALLY OF: (1) AT LEAST ONE LEUCO COMPOUND SELECTED FROM THE GROUP CONSISTING OF LEUCO COMPOUNDS REPRESENTED BY ONE OF THE FOLLOWING GENERAL FORMULAS 1-((4-(R-N(-R)-)PHENYL)-CH(-R2)-),4-(R-N(-R)-)BENZENE WHEREIN EACH R IS A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF H, LOWER ALKYL AND ARYL AND NOT ALL OF THE R''S NEED BE THE SAME AND R2 IS A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF H, LOWER ALKYL AND ARYL; AND 2,7-DI(R-N(-R)-),10-R2-ANTHRACENE WHERE Z REPLACES CARBON 9 AND 2,7-DI(R-N(-R)-)ACRIDINE WHERE Z REPLACES CARBON 9 WHEREIN EACH R HAS THE SAME MEANING AS INDICATED ABOVE AND Z REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF O, S, SE AND -NH, AND R3 IS A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF H, ALKYL AND ARYL; AND (2) AT LEAST ONE COLORLESS NITROGEN-CONTAINING ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF BENZOTRIAZOLES AND HETEROCYCLIC KETIMIDES IN WHICH THE IMIDE NITROGEN IS ATTACHED TO A RING CARBON IN A HATEROCYCLID NUCLEUS HAVING AT LEAST 5 AND NOT MORE THAN 6 ATOMS.