Method for stabilizing organic base material to light

A photographic photosensitive material which comprises a support and at least one hydrophilic colloid layer, wherein at least one hydrophilic colloid layer contains a dye or an image forming dye and at least one metal complex compound having the formula:

• ##STR7## wherein R.sup.1 to R.sup.4 are each independently hydrogen atoms, halogen atoms, cyano groups, hydroxyl groups, or alkyl groups, aryl groups, cycloalkyl groups or heterocyclic groups which are bonded directly or indirectly through a divalent linking group to a carbon atom on a benzene ring;
• two adjacent substituents from among R.sup.1 to R.sup.4 may be joined together to form a ring;
• the two R.sup.4 substituents may also be joined together to form a ring;
• R.sup.5 and R.sup.6 are independently hydrogen atoms, alkyl groups, alkylthio groups, aryl groups, arylthio groups, heterocyclic thio groups or cyano groups;
• the R.sup.5 and R.sup.6 substituents may be joined together to form a ring, with the proviso that when R.sup.1 to R.sup.4 each is a hydrogen atom, R.sup.5 and R.sup.6 is not a phenyl group.

An element comprising the combination of a dye or an image forming dye and at least one metal complex compound having the formula:

• ##STR8## wherein R.sup.1 to R.sup.4 are each independently hydrogen atoms, halogen atoms, cyano groups, hydroxyl groups, or alkyl groups, aryl groups, cycloalkyl groups or heterocyclic groups which are bonded directly or indirectly through a divalent linking group to a carbon atom on a benzene ring;
• two adjacent substituents from among R.sup.1 to R.sup.4 may be joined together to form a ring;
• the two R.sup.4 substituents may also be joined together to form a ring;
• R.sup.5 and R.sup.6 are independently hydrogen atoms, alkyl groups, alkylthio groups, aryl groups, arylthio groups, heterocyclic thio groups or cyano groups;
• the R.sup.5 and R.sup.6 substituents may be joined together to form a ring, with the proviso that when R.sup.1 to R.sup.4 each is a hydrogen atoms, R.sup.5 and R.sup.6 is not a phenyl group.