Geometric print-out for superimposable card systems

Claim 1

APPARATUS FOR PREPARATING A COMPOSITE PHOTOGRAHIC READ-OUT RECORD OF THE RELATIVE LOCATIONS OF OPTICALLY DIFFERENTIABLE MARKINGS ESTABLISHED BY A RECORD SHEET BEARING SUCH MARKINGS AS PREDETERMINED POSITIONS ON SAID RECORD SHEET, COMPRISING: (A) A LIGHT-TRANSMITTING GRID PLATE HAVING A PHOTOGRAPHICALLY REPRODUCIBLE GEOMETRICAL PATTERN PROVIDING AN ACCURATELY DIMENSIONED READ-OUT PATTERN CORRESPONDING TO THE POSSIBLE PREDETERMINED MARKING POSITIONS OF SAID RECORD SHEET, SAID RIGID PLATE INCLUDING MEANS FOR REMOVABLY SECURIGN THEREON AN AUXILIARY PATTERN-FORMING TRANSPARENCY LYING IN A MARGING PART OF SAID GRID PLATE, (B) POSITION-LOCATING FRAME MEANS ADAPTED TO RECEIVE AND TO SECURE IN SUPERPOSED, REGISTERED RELATION (1) SAID GRID PLATE, (2) A SHEET OF LIGHT-TRANSMITTING PHOTOGRAPHICALLY SENSITIVE MATERIAL, AND (3) SUCH A RECORD SHEET, IN THAT ORDER, AND (C) LIGHT SOURCES DISPOSED ON OPPOSITER SIDES OF THE ASSEMBLY OF SUPERPOSED AND REGISTERED COMPONENTS OF (B) FOR SIMULTANEOUSLY EXPOSING SAID SENSITIVE MATERIAL, ON BOTH OF ITS SRFACES, TO THE RESPECTIVE LIGHT PATTERNS ESTABLISHED BY SAID GRID PLATE AND SAID RECORD SHEET, (D) WHEREBY SUBSEQUENT PROCESSING AND HANDLING OF THE READ-OUT RECORD THUS PROVIDED BY SAID SENSITIVE MATERAIL WILL NOT ALTER THE GEOMETRICAL CONFORMITY OF THE PATTERN PRODUCED BY SAID GRID PLATE WITH RESPECT TO THE MARKING PATTERN PRODUCED BY SAID RECORD SHEET.