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Claim 1

A LIGHT SENSITIVE ELECTROSTATIC VOLTAGE POLARITY REVERSSING MEANS FOR UTILIZATION IN COMBINATION WITH A RECORD MEDIUM COMPRISING: (A) FIRST, SECOND AND THIRD ELECTRODES PROVIDING A FIRST AIR GAP BETWEEN SAID FIRST AND THIRD ELECTRODES, A SECOND AIR GAP BETWEEN SAID SECOND AND THIRD ELECTRODES, AND A THIRD AIR GAP BETWEEN SAID FIRST AND SECOND ELECTRODES; (B) SAID RECORD MEDIUM BEING DISPOSED ADJACENT SAID THIRD AIR GAP AND WITHIN SAID FIRST AND SECOND AIR GAPS; (C) SAID FIRST ELECTRODE BEING A PHOTOCONDUCTOR; (D) MEANS FOR CONNECTING THE INFLUENCE OF A FIRST VOLTAGE POLARITY BETWEEN SAID FIRST AND THIRD ELECTRODES AND MEANS FOR CONNECTING THE INFLUENCE OF A SECOND VOLTAGE POLARITY, OPPOSING SAID FIRST VOLTAGE POLARITY, BETWEEN SAID SECOND AND THIRD ELECTRODES; (E) MEANS FOR ELECTRICALLY INSULATING SAID FIRST ELECTRODE FROM SAID SECOND ELECTRODE AND PREVENTING A TRANSFER OF IONS ACROSS SAID THIRD AIR GAP; (F) SAID SECOND AND THIRD ELECTRODES BEING ADAPTED TO PROVIDE A TRANSFER OF IONS ACROSS SAID SECOND AIR GAP UNDER THE INFLUENCE OF SAID SECOND VOLTAGE POLARITY AND DEPOSIT ON SAID RECORD MEDIUM A PREDETERMINED ELECTROSTATIC CHARGE; AND (G) OPTICAL FIBER MEANS FOR CONDUCTING LIGHT TO SAID FIRST ELECTRODE AND THEREBY PROVIDING A TRANSFER OF IONS ACROSS SAID FIRST AIR GAP UNDER THE INFLUENCE OF SAID VOLTAGE POLARITY THEREBY PRODUCING ON SAID RECORD MEDIUM AN ELECTROSTATIC CHARGE OPPOSING SAID PREDETERMINED ELECTROSTATIC CHARGE.