Electrostatic printer apparatus

Claim 1

IN A PRINTING APPARATUS, MEANS FOR PRODUCING A MOSAIC DATA PATTERN ON AN ELECTROSTATICALLY MARKABLE PRINT MEDIUM, COMPRISING IN COMBINATION RECORD ELECTRODE MEANS LOCATED AT A PRINT LOCATION, (A) MEANS FOR MOVING SAID PRINT MEDIUM AT A CONSTANT SPEED PAST SAID RECORD ELECTRODE MEANS AND IN PROXIMITY THERETO, (B) MEANS FOR APPLYING A UNIFORM SEQUENCE OF MARK PRODUCING RECORD POTENTIAL PULSES TO SAID RECORD ELECTRODE MEANS IN TIMED RELATION WITH THE ADVANCE OF SAID PRINT MEDIUM, (C) RECORD SUPPRESSION ELECTRODE MEANS LOCATED PROXIMATE SAID RECORD ELECTRODE MEANS, (D) MEANS FOR APPLYING A RECORD INHIBIT CONTROL POTENTIAL TO SAID SUPPRESSION ELECTRODE MEANS, (E) SAID CONTROL POTENTIAL HAVING A MAGNITUDE AND POLARITY CAPABLE OF INHIBITING THE PRODUCTION OF A RECORD MARK ON SAID PRINT MEDIUM BY SAID RECORD ELECTRODE MEANS WHEN SAID RECORD ELECTRODE MEANS IS ENERGIZED WITH SAID MARK PRODUCING PULSES, (F) AND MEANS FOR SELECTIVELY APPLYING SAID CONTROL POTENTIAL TO SAID SUPPRESSION ELECTRODE MEANS IN A SELECTIVELY VARIABLE SEQUENCE IN TIMED RELATION WITH THE APPLICATION OF SAID UNIFORM PATTERN OF RECORD PULSES TO SAID RECORD ELECTRODE MEANS, SAID CONTROL POTENTIAL PATTERN BEING IN ACCORDANCE WITH A DATA PATTERN TO BE REPRODUCED ON SAID PRINT MEDIUM.