atoms e g silver behenate silver laurate etc the latter are also known in the art as 34 silver soaps 34 complexes of organic or inorganic silver salts wherein the ligand has a gross stability constant between 4 0 10 0 can also be used preferably the silver source material should constitute from about 5 50 percent by weight of the image forming layer and more preferably from about 10 30 percent by weight the reducing agent for silver ion can be any such reducing agent known to those skilled in the art non limiting examples include phenols hindered phenols catechol 1 2 dihydroxybenzene pyrogallol 1 2 3 trihydroxybenzene methyl gallate hydroquinone substituted hydroquinones ascorbic acid ascorbic acid derivatives and leuco dyes presently preferred is methyl gallate the reducing agent is preferably present in the image forming layer in an amount of from about 5 to about 25 wt and more preferably from about 10 to about 20 wt based upon the total weight of the image forming layer non limiting examples of development accelerators which can be used in the present invention include but are not limited to 3 indazolinone compounds urea 1 3 diphenyl urea 1 3 diethyl urea butyl urea and ethylene urea the use of conventional toners such as phthalazinone phthalazine phthalimide succinimide barbituric acid etc can.