System for retrieving microimages formed on superpositioned microforms and the like

Claim 1

AN ARTICLE OF MANUFACTURE COMPRISING: A FIRST MICROFORM INCLUDING A FIRST HIGH RESOLUTION FILM HAVING A BASE AND AN EMULSION COATING ON WHICH A TWO DIMENSIONAL ARRAY OF MICROIMAGES IS FORMED, AND A TRANSPARENT PROTECTIVE LAYER OF SUBSTANTIALLY UNIFORM THICKNESS DISPOSED ON BOTH THE UPPER AND LOWER SURFACES OF SAID FIRST FILM, A SECOND MICROFORM INCLUDING A SECOND HIGH RESOLUTION FILM HAVING A BASE AND AN EMULSION COATING ON WHICH A TWO DIMENSIONAL ARRAY OF MICROIMAGES IS FORMED, AND A TRANSPARENT PROTECTIVE LAYER OF SUBSTANTIALLY UNIFORM THICKNESS AND DISPOSED ON BOTH THE UPPER AND LOWER SURFACES OF SAID SECOND FILM, MEANS FOR DISPOSING SAID MICROFORMS ONE ON TOP OF THE OTHER SUCH THAT THE MICROIMAGES FORMED IN ONE ARRAY ARE SUPERPOSED ABOVE THE CORRESPONDINGLY POSITIONED MICROIMAGES FORMED IN THE OTHER ARRAY, THE PLANE FORMED BY THE EMULSION COATING ON ONE OF SAID FILMS BEING SPACED A PREDETERMINED DISTANCE FROM THE PARALLEL PLANE FORMED BY THE EMULSION COATING ON THE OTHER FILM IN ACCORDANCE WITH THE REDUCTION RATIO OF THE MICROIMAGES FORMED ON THE FILM, SAID LATTER MEANS INCLUDING MEANS FOR DETACHABLY INTERCONNECTING SAID MICROFORMS TO SUPERPOSE CORRESPONDING MICROIMAGES OF RESPECTIVE ARRAYS WHEREBY ANY ONE OF THE MICROFORMS CAN BE SEPARATED FROM THE OTHER AND ANOTHER MICROFORM BE DETECHABLY CONNECTED THERETO FOR INTERCHANGEABLY SUPERPOSING MICROIMAGES OF RESPECTIVE MICROFORMS.