Method and apparatus for copying

Claim 1

AN APPARATUS FOR GENERATING HARD COPY FROM AN ORIGINAL DOCUMENT COMPRISING: MEANS TO ILLUMINATE A DOCUMENT TO BE COPIED ONE PORTION AT A TIME; A MANIFOLD CONTAINING CONDUCTIVE PARTICLES OF DEVELOPER MATERIAL DISPOSED ADJACENT TO THE PATH OF A COPY RECEIVING MEDIUM; A CONTROL ELECTRODE COMPRISING: A BLOCK OF ELECTRICALLY INSULATING MATERIAL, A PLURALITY OF PHOTOCONDUCTIVE ELECTRODES DISPOSED IN A GENERALLY PARALLEL ARRAY ON ONE SIDE OF SAID BLOCK, A SECOND PLURALITY OF PHOTOCONDUCTIVE ELEMENTS ARRANGED IN A SIMILAR ARRAY ON THE OPPOSITE SIDE OF SAID BLOCK, AND A PLURALITY OF ELECTRICALLY CONDUCTIVE ELEMENTS CONNECTING ONE EACH OF SAID PHOTOCONDUCTIVE ELEMENTS WITH A CORRESPONDING ELEMENT ON THE OPPOSITE FACE OF SAID BLOCK; A SOURCE OF POTENTIAL CONNECTED ACROSS SAID TWO ARRAYS OF PHOTOCONDUCTIVE ELEMENTS; MEANS TO PROJECT AN IMAGE OF THE ILLUMINATED PORTION OF SAID DOCUMENT ONTO ONE OF SAID ARRAYS OF PHOTOCONDUCTIVE ELEMENTS WHILE MAINTAINING THE OTHER ARRAY OF PHOTOCONDUCTIVE ELEMENTS IN THE DARK, WHEREBY AN ELECTRICAL FIELD IS CREATED BETWEEN THE SURFACE OF SAID BLOCK BEARING SAID ELECTRICALLY CONDUCTIVE MEMBERS AND SAID CONDUCTIVE DEVELOPER MANIFOLD, SAID FIELD CONSTITUTING THE MEANS TO PROJECT DEVELOPER PARTICLES ONTO A COPY RECEIVING MEDIUM DISPOSED ADJACENT TO SAID CONTROL ELECTRODE, WHICH FIELD CAUSES SAID PROJECTED DEVELOPER PARTICLES TO BE DEPOSITED ON SAID COPY RECEIVING MEMBER IN RESPONSE TO SAID FIELD WHEREBY A VISIBLE IMAGE CORRESPONDING TO THE ILLUMINATED PORTION OF THE ORIGINAL DOCUMENT IS PRODUCED ON THE COPY MEMBER.

Claim 2

AN APPARATUS FOR GENERATING HARD COPY FROM AN ORIGINAL DOCUMENT COMPRISING: MEANS TO ILLUMINATE A DOCUMENT TO BE COPIED ONE PORTION AT A TIME; A MANIFOLD CONTAINING CONDUCTIVE PARTICLES OF DEVELOPER MATERIAL DISPOSED ADJACENT TO THE PATH OF A COPY RECEIVING MEDIUM; A CONTROL ELECTRODE COMPRISING: A BLOCK OF ELECTRICALLY INSULATING MATERIAL, A PLURALITY OF PHOTOCONDUCTIVE ELECTRODES DISPOSED IN A GENERALLY PARALLEL ARRAY ON ONE SIDE OF SAID BLOCK, A SECOND PLURALITY OF PHOTOCONDUCTIVE ELEMENTS ARRANGED IN A SIMILAR ARRAY ON THE OPPOSITE SIDE OF SAID BLOCK, AND A PLURALITY OF ELECTRICALLY CONDUCTIVE ELEMENTS CONNECTING ONE EACH OF SAID PHOTOCONDUCTIVE ELEMENTS WITH A CORRESPONDING ELEMENT ON THE OPPOSITE FACE OF SAID BLOCK; A SOURCE OF POTENTIAL CONNECTED ACROSS SAID TWO ARRAYS OF PHOTOCONDUCTIVE ELEMENTS; MEANS TO PROJECT AN IMAGE OF THE ILLUMINATED PORTION OF SAID DOCUMENT ONTO ONE OF SAID ARRAYS OF PHOTOCONDUCTIVE ELEMENTS WHILE MAINTAINING THE OTHER ARRAY OF PHOTOCONDUCTIVE ELEMENTS IN THE DARK, WHEREBY AN ELECTRICAL FIELD IS CREATED BETWEEN THE SURFACE OF SAID BLOCK BEARING SAID ELECTRICALLY CONDUCTIVE MEMBERS AND SAID CONDUCTIVE DEVELOPER MANIFOLD, SAID FIELD CONSTITUTING THE MEANS TO PROJECT DEVELOPER PARTICLES ONTO A COPY RECEIVING MEDIUM DISPOSED ADJACENT TO SAID CONTROL ELECTRODE, WHICH FIELD CAUSES SAID PROJECTED DEVELOPER PARTICLES TO BE DEPOSITED ON SAID COPY RECEIVING MEMBER IN RESPONSE TO SAID FIELD WHEREBY A VISIBLE IMAGE CORRESPONDING TO THE ILLUMINATED PORTION OF THE ORIGINAL DOCUMENT IS PRODUCED ON THE COPY MEMBER.