Reproduction of color drawings, film transparencies and photographs

Claim 1

IN A PHOTOOMECHANCIAL PROCESS FOR THE PRODUCTION OF PROPERLY BALANCED PRIMARY COLOR PRINTERS FOR AT LEAST A THREE COLOR PRINTING PROCESS, WHICH COMPRISES PREPARING A SET OF CORRECTIVE DYE IMAGE SILHOUETTE MASKS EACH MEMBER OF WHICH IS MADE BY PRINTING IN REGISTER AN UNCORRECTED PRIMARY COLOR PRINTER SEPARATION AND A PRELIMINARY SILVER IMAGE SILHOUETTE RECORD FO OTHER COLOR AREAS DESIRED TO BE CONTROLLED, ONTO A LIGHT DENSITIVE HIGH CONTRAST ORTHOCHROMATIC LAYER CAPABLE OF PRODUCING GASMMAS OF FOUR TO TEN, WHEN PROCESSED IN A HIGH CONTRAST PARAFORMALDEHYDE DEVELOPER, TO PRODUCE MASTER SILVER IMAGE SILHOUETTE MASKS OF UNIFORM DENSITY AND THEREAFTER PROJECTING LIGHT THROUGH SAID MASTER SILHOUETTE MASKS ONTO A LIGHT SENSITIVE HIGH CONTRAST ORTHOCHROMATIC LAYER, DEVELOPING EXPOSED PORTIOND OF SAID LAYER IN A HIGH CONTRAST PARAFORMALDEHYDE DEVELOPER AND PRODUCING A REVERSED DYE IMAGE ON THE RESULTING CORRECTIVE SILHOUETTE MASKS AND PROJECTING WHITE LIGHT THROUGH EACH OF AT LEAST THREE PROJECTING WHITE COLOR PRINTER SEPARATIONS SUPERIMPOSED ON A DYE COLORED VARIABLE OPACITY REPRODUCTION SCREEN AND AT LEAST TWO CORRECTIVE TRANSPARENT DYE IMAGE SILHOUETTE MASKS SUPERIMPOSED ON EACH OF SAID UNCORRECTED PRIMARY COLOR SEPARATIONS, ONTO A LIGHT SENSITIVE HIGH CONTRAST ORTHOCHROMATIC LAYER CAPABLE OF PRODUCING GAMMAS OF FOUR TO TEN WHEN PROCESS WITH A PARAFORMALDEHYDE DEVELOPER, EACH CORRECTIVE SILHOUETTE MASK BEING DYED TO UNIFORM INTENSITY IN