ELECTROGRAPHIC PRINTING

PURPOSE: An electrographic imaging process is provided to use multitude of charge retentive substrates not heretofore available in electrography, and to use specific process parameter. CONSTITUTION: A process for imaging in an electrographic system comprising depositing at an image station a charge in image wise configuration directly on a charge retentive substrate to be developed, developing said substrate within a distance in said system from said image station, said distance determined from the formula D = TC * S * QF. D is equal to the distance between latent image deposition and development in arbitrary units. TC is the time constant of the charge retentive substrate in seconds. S is the speed in the systems of the substrate in the same units as D per second. QF is equal to the number of time constants of the substrate used in the process.