Counting circuit control for electrophotographic printers

Claim 1

IN COMBINATION, A PHOTOCONDUCTIVE PRINTING SURFACE, MEANS FOR MOVING SAID PRINTING SURFACE, MEANS FOR PLACING AN ELECTROSTATIC CHARGE ON THE SURFACE, A SOURCE OF LIGHT ENERGY, AN OPTICAL SYSTEM FOR PROJECTING THE LIGHT ENERGY ONTO SAID CHARGED SURFACE TO MOFIFY THE CHARGE THEREON, AND MEANS FOR VARYING SAID LIGHT ENERGY IN SYNCHRONISM WITH THE MOVEMENT OF THE PRINTING SURFACE, SAID LIGHT VARYING MEANS COMPRISING A PLURALITY OF HOLDERS FOR CARRYING OBJECTION TO BE PRINTED, SAID HOLDERS EACH HAVING TWO LIGHT TRANSMITTING PORTIONS THEREIN, MEANS FOR REPETIVELY MOVING ONE OF THE HOLDERS THROUGH THE LIGHT ENERGY TO PRODUCE VARIATIONS THEREIN UN ACCORDANCE WITH THE OBJECT CARRIED BY TE MOVING HOLDER, LIGHT SENSITIVE MEANS, MEANS FOR ENERGIZING THE LIGHT SENSITIVE MEANS THE RESPONSE TO THE MOVEMENT OF THE TWO LIGHT TRANSMITTING PORTIONS THROUGH THE LIGHT ENERGY TO PRODUCE A FIRST AND A SECOND ELECTRICAL PULSE, SAID FIRST PULS PRODUCTING A COUNTING PLUS AND ACTUATING THE PRINTING SURFACE, MOVING MEANS, SAID PLUS DE-ACTUATING THE PRINTING SURFACE MOVING MEANS, A COUNTING CIRCUIT ENERGIZED BY