Non-filming dual additive developer

Claim 1

AN IMAGING PROCESS COMPRISING THE STEPS OF: A. FOMING AN ELECTROSTATIC LATENT IMAGE ON AN IMAGING SURFACE, B. DEVELOPING SAID LATENT IMAGE BY BRINGING AN ELECTROSTATOGRAPHIC DEVELOPING MIXTURE WITHIN THE INFLUENCE OF SAID LATENT IMAGE, SAID DEVELOPING MIXTURE COMPRISING PARTICLES, SAID PARTICLES INCLUDING (1) FINELY DIVIDED ELECTROSCOPIC TONER MATERIAL, (2) A MINOR PORTION, BASED UPON THE WEIGHT OF SAID TONER MATERIAL OF A STABLE, TOUGH, SUBSTANTIALLY SMEARLESS, POLYMERIC ADDITIVE HAVING AN AVERAGE PARTICLE SIZE LESS THAN ABOUT THE AVERAGE PARTICLE SIZE OF SAID FINELY DIVIDED TONER MATERIAL, AND (3) A MINOR PROPORTION BASED ON THE WEIGHT OF SAID TONER MATERIAL OF A FINELY DIVIDED, NONSMEARABLE, ABRASIVE MATERIAL OF A HARDNESS GREATER THAN SAID POLYMERIC ADDITIVE AND TONER MATERIALS, C. REMOVING THE RESIDUAL DEVELOPED IMAGE FROM SAID IMAGING SUFACE BY A FORCE WHICH CAUSES THE TONER, POLYMERIC ADDITIVE AND ABRASIVE MATERIALS OF SAID DEVELOPING MIXTURE TO BE WIPED ACROSS AT LEAST A PORTION OF SAID IMAGING SURFACE, AND D. REPEATING THE PROCESS SEQUENCE AT LEAST ONE ADDITIONAL TIME.