Method of color reproduction

Claim 1

A METHOD OF MULTI-COLOR REPRODUCTION AND WHEREIN A PLURALITY OF HUES ARE SEPARATED IN ART COPY AS PREPARED, SAID METHOD COMPRISING THE STEPS OF MAKING A MONOCHROMATIC GUIDE DRAWING ON A BASE SURFACE WHICH REFLECTS ULTRAVIOLET LIGHT, COVERING THE GUIDE GDRAWING WITH AN OVERLAY SHEET OF SUBSTANTIALLY COLORLESS AND TRANSPARENT FILMTYPE MATERIAL WHICH TRANSMIT ULTRAVIOLET LIGHT, APPLYING TRANSPARENT LIQUID COLORING MATERIAL CONTAINING AN ABSORBENT OF ULTRAVIOLET LIGHT AND OF A HUE DIFFERENT THAN THAT OF THE GUIDE DRAWING TO SAID OVERLYA SHEET IN REGISTER WITH A PORTION F THE GUIDE DRAWING, SEPARATING SAID OVERLY SHEET FROM THE BASE ART COPY, AND PHOTOGRAPHICALLY PRODUCING SEPARATE AND INDIVIDUALNEGATIVES DIRECTLY FROM SAID BASE ART COPY AND SAID OVERLAY SHEET ON ORTHOCHROMATIC FILM, THE PHOTOGRAPHIC PRODUCTION OF A NEGATIVE FROM SAID OVERLAY SHEET BEING CHARACTERIZED BY THE STEPS OF MAKING ONE PHOTOGRAPHIC EXPOSURE OF THE OVERLAY SHEET AGAINST A WHITE BACKING WHICH IS REFLECTIVE OF ULTRAVIOLET LIGHT AND THROUGH A HALFTONE SCREEN WITH LIGHT PRINCIPALLY MADE UP OF WAVELENGTHS OTHER THAN ULTRAVIOLET, AND MAKING A SECOND PHOTOGRAPHIC EXPOSURE WITHOUT THE HALFTONE SCREEN AND WITH LIGHT LIMITED SUBSTANTIALLY TO THE ULTRAVIOLET WAVELENGTH RANGE TO PROVIDE CLEAR DELINEATION BETWEEN COLOR AND NONCOLOR AREAS AND TO EFFECT REMOVAL OF HALFTONE DOTS FROM THE NON-COLOR AREAS.

Claim 2

A METHOD OF MULTI-COLOR REPRODUCTION AND WHEREIN A PLURALITY OF HUES ARE SEPARATED IN ART COPY AS PREPARED, SAID METHOD COMPRISING THE STEPS OF MAKING A MONOCHROMATIC GUIDE DRAWING ON A BASE SURFACE WHICH REFLECTS ULTRAVIOLET LIGHT, COVERING THE GUIDE GDRAWING WITH AN OVERLAY SHEET OF SUBSTANTIALLY COLORLESS AND TRANSPARENT FILMTYPE MATERIAL WHICH TRANSMIT ULTRAVIOLET LIGHT, APPLYING TRANSPARENT LIQUID COLORING MATERIAL CONTAINING AN ABSORBENT OF ULTRAVIOLET LIGHT AND OF A HUE DIFFERENT THAN THAT OF THE GUIDE DRAWING TO SAID OVERLYA SHEET IN REGISTER WITH A PORTION F THE GUIDE DRAWING, SEPARATING SAID OVERLY SHEET FROM THE BASE ART COPY, AND PHOTOGRAPHICALLY PRODUCING SEPARATE AND INDIVIDUALNEGATIVES DIRECTLY FROM SAID BASE ART COPY AND SAID OVERLAY SHEET ON ORTHOCHROMATIC FILM, THE PHOTOGRAPHIC PRODUCTION OF A NEGATIVE FROM SAID OVERLAY SHEET BEING CHARACTERIZED BY THE STEPS OF MAKING ONE PHOTOGRAPHIC EXPOSURE OF THE OVERLAY SHEET AGAINST A WHITE BACKING WHICH IS REFLECTIVE OF ULTRAVIOLET LIGHT AND THROUGH A HALFTONE SCREEN WITH LIGHT PRINCIPALLY MADE UP OF WAVELENGTHS OTHER THAN ULTRAVIOLET, AND MAKING A SECOND PHOTOGRAPHIC EXPOSURE WITHOUT THE HALFTONE SCREEN AND WITH LIGHT LIMITED SUBSTANTIALLY TO THE ULTRAVIOLET WAVELENGTH RANGE TO PROVIDE CLEAR DELINEATION BETWEEN COLOR AND NONCOLOR AREAS AND TO EFFECT REMOVAL OF HALFTONE DOTS FROM THE NON-COLOR AREAS.