PHOTOGRAPHIC PHYSICAL DEVELOPERS COMPRISING A WATER SOLUBLE SALT OF AN ALKENYL AMINE COMPOUND N IONIC SURFACTANT AND PROCESSES UTILIZING THIS DEVELOPER

摘要

In a stabilized photographic physical developer comprising a solution of silver ions reducible to silver metal, a reducing agent for reducing said silver ions to silver metal, and an ionic surfactant to increase the life of the developer, the improvement wherein at least one ionic surfactant is a water soluble salt of an alkenyl amine compound. A preferred physical developer additionally comprises a second different ionic surfactant which is preferably a water soluble salt of a primary alkyl amine compound. The salt of the alkenyl amine compound is preferably present in an amount sufficient to increase the life of the developer at least 50 percent when compared to the life of an identical developer without the alkenyl amine compound. Photographic physical development processes comprise contacting a copy medium comprising a catalytic nuclei image which catalyzes deposition of metal from a physical developer, with the above-mentioned improved physical developer. Preferred processes relate to forming printing plates or film transparencies.