Jpilm-positioning system

Abstract

Abstract A FILM-POSITIONING SYSTEM IS PROVIDED FOR ENEBLING RAPID SEQUENTIAL EXPOSURE OR READOUT OF FILM FRAMELETS MAKING UP A MICROFICHE FILM FRAME. SUCCESSIVE FRAMELETS ARE EXPOSED OR READ OUT IN STANDARD INDUSTRY STEP AND REPEAT SEQUENCE BY MOVING THE MICROFICHE FILM FRAME RELATIVE TO A FIXED LENS IN SUCCESSIVE INCREMENTAL STEPS WITHOUT HAVING TO MOVE MAJOR PORTIONS OF THE APPARATUS. THIS IS ACCOMPLISHED IN PART BY PROVIDING FIRST AND SECOND STORAGE LOOPS ADJACENT TO OPPOSITE ENDS OF THE EXPOSURE AREA TO ACCOMODATE THE MOVEMENT OF THE FILM IN EXPOSING OR READCING OUT A ROW OF FRAMELETS. OTHER BULKY APPARATUS SUCH AS THE PAYOUT AND TAKEUP MICROFICHE FILM REELS NEED NOT BE INCREMENTALLY MOVED WHEN EXPOSING ROWS BUT ONLY WHEN SHIFTING TO A NEW ROW ALL TO THE END THAT EXPOSURE OF MICROFICHE FILM FRAMELETS, OR ALTERNATIVELY, LOCATION OF A SINGLE FRAMELET FOR READOUT CAN MORE RAPIDLY BE EFFECTIVE THAN POSSIBLE WITH EQUIPMENT PROVIDED HERETOFORE.

Inventors

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