Photomechanical method for preparing multicolor mosaic carriers for additive color photography and cinematography

Claim 1

A PHOTOMECHANICAL METHOD FOR PREPARING A MOSAIC FILTER SCREEN PATTERN ON A TRANSPARENT CARRIER FOR ADDITIVE MULTICOLOR PHOTOGRAPHY COMPRISING, COVERING THE FRONT SURFACE OF SAID CARRIER WITH A FIRST COLORLESS LIGHT SENSITIVE COLLOIDAL LAYER, EXPOSING SAID FIRST LAYER FROM THE FRONT SURFACE THEREOF THROUGH A FIRST OPAQUE MASK HAVING A PATTERN OF SPACED MINUTE LIGHT-PERMEABLE AREAS OF SIMILAR SHAPE AND SIZE, SAID AREAS ALIGNED IN PARALLEL EQUALLY SPACED STRAIGHT ROWS, REMOVING THE UNEXPOSED PORTIONS OF SAID FIRST COLLOIDAL LAYER, DYEING SAID EXPOSED PORTIONS OF MONOCHROME FILTER SCREENS, APPLYING ADDITIONAL COLORLESS LIGHT SENSITIVE COLLOIDAL LAYERS ON THE SAME SIDE OF SAID CARRIER AS SAID FIRST LAYER TO OBTAIN ADDITIONAL SERIES OF FILTER SCREENS, EXPOSING EACH OF SAID ADDITIONAL LAYERS BEFORE APPLICATION OF THE SUCCEEDING ADDITIONAL LAYERS, SAID ADDITIONAL EXPOSURES BEING MADE FROM THE REAR SURFACE OF SAID CARRIER THROUGH SAID FIRST FILTER SCREENS, ANY PRIOR ADDITIONAL FILTER SCREENS AND AN ADDITIONAL MASK HAVING PARALLEL OPAQUE STRIPS SEPARATED BY LIGHT PERMEABLE STRIPS, SAID PERMEABLE STRIPS BEING POSITIONED AT AN ANGLE RELATIVE TO ANY PRIOR FILTER SCREENS THAT EACH ELONGATED PERMEABLE STRIP IS COMPLETELY INTERRUPTED PERIODICALLY BY SAID PRIOR FILTER SCREENS, SAID ADDITIONAL EXPOSURES AFFECTING ONLY THOSE PORTIONS OF THE ASSOCIATED ADDITIONAL LAYERS NOT IN ALIGNMENT WITH SAID PRIOR FILTER SCREENS AND SAID OPAQUE STRIPS OF SAID ASSOCIATED ADDITIONAL MASKS, REMOVING THE UNEXPOSED PORTIONS OF EACH ADDITIONAL LAYER AFTER ITS EXPOSURE AND BEFORE APPLICATION OF A SUBSEQUENT LAYER, DYEING THE EXPOSED PORTIONS OF EACH OF SAID ADDITIONAL LAYER WITH AN ADDITIONAL DISTINCTIVE COLOR AFTER REMOVAL OF THE ASSOCIATED UNEXPOSED PORTION AND BEFORE APPLICATION OF A SUBSEQUENT LAYER TO OBTAIN AN ASSOCIATED ADDITIONAL SERIES OF MONOCHROME FILTER SCREENS, COVERING SAID ADDITIONAL SERIES OF MONOCHROME FILTER SCREENS WITH A FINAL COLORLESS LIGHT SENSITIVE COLLOIDAL LAYER, EXPOSING SAID FINAL LAYER FROM THE REAR SURFACE OF SAID CARRIER THROUGH THE PRIOR FILTER SCREENS UNDER CONDITIONS AFFECTING ONLY THE PORTIONS OF SAID FINAL LAYER NOT IN ALIGNMENT WITH THE PRIOR FILTER SCREENS, REMOVING THE UNEXPOSED PORTIONS OF SAID FINAL COLLOIDAL LAYER, AND DYEING SAID EXPOSED PORTIONS OF SAID FINAL LAYER WITH A FINAL DISTINCTIVE COLOR TO OBTAIN A FINAL SERIES OF MONOCHROME FILTER SCREENS, EACH SAID SERIES OF MONOCHROME FILTER SCREENS COVERING APPROXIMATELY AN EQUAL AREA.