Process for single-impression multicolor printing

Abstract

Abstract Process of producing an apparent full color print of a multicolored picture, comprising the steps of: A. BY USE OF A COMPOSITE SEPARATION SCREEN HAVING INTERSPERSED 1ST AND 2ND FILTER AREAS WHICH TRANSMIT SUBSTANTIALLY RED AND SUBSTANTIALLY GREEN INFORMATION, RESPECTIVELY, OF THE MULTICOLORED PICTURE, PHOTOMECHANICALLY FORMING UPON A PRINTING SURFACE HALFTONE PRINTING ELEMENTS OF A COMPOSITE IMAGE HAVING CORRESPONDINGLY INTERSPERSED 1ST AND 2ND INFORMATION AREAS RESPECTIVELY FOR THE RED AND THE GREEN INFORMATION, ALL OF THE HALFTONE PRINTING ELEMENTS BEING RECEPTIVE TO A DARK INK OF SUBSTANTIALLY NEUTRAL TONE; B. PHOTOMECHANICALLY FORMING FIELD PRINTING ELEMENTS UPON THE PRINTING SURFACE ONLY IN PORTIONS OF THE SURFACE CORRESPONDING TO THE 1ST INFORMATION AREAS, THE FIELD PRINTING ELEMENTS PROVIDING BACKGROUND TO THE HALFTONE PRINTING ELEMENTS OCCURRING WITHIN THE 1ST INFORMATION AREAS, THE FIELD PRINTING ELEMENTS BEING RECEPTIVE TO A SUBSTANTIALLY RED INK; C. INKING THE HALFTONE PRINTING ELEMENTS WITH THE DARK INK AND THE FIELD PRINTING ELEMENTS WITH THE RED INK; AND D. SIMULTANEOUSLY TRANSFERRING THE INKS UPON THE PRINTING ELEMENTS TO A RECEIVING SUBSTRATE OF A SELECTED PALE COLOR.

Inventors

• 👤 L Lorber

Bibliographic Details