Method of printing

Claim 1

IN A METHOD OF PRINTING UTILIZING A PARTICULATE PRINTING MEDIUM, THE STEPS OF SUPERIMPOSING SEPARATE SUPPLIES OF RANDOMLY ORIENTED PRINTING MEDIUM PARTICLES OF DISTINCT COLORATION AND SEPARATE FORAMINOUS SCREENS WITH APERTURED MASKS TO DEFINE DIFFERENT OPEN PATTERNS THEREON, RESPECTIVELY, CREATING A VACUUM AT EACH SAID OPEN SCREEN PATTERN TO ATTRACT TO AND ADHERE AT SAID SCREEN A LAYER OF SAID PARTICLES FROM THE CORRESPONDING SUPPLY OF PARTICLES, THUS FORMING A PLURALITY OF DIFFERENTLY COLORED PARTIAL PATTERN LAYERS AT THE SEPARATE SCREENS, SEQUENTIALLY TRANSFERRING THE PARTIAL PATTERN LAYERS IN REGISTRY WITH EACH OTHER TO A SINGLE COMPOSITE EVACUATED SCREEN MASKED TO DEFINE THE COMPLETE PATTERN IN A LAYER UPON SAID COMPOSITE SCREEN, AND FINALLY TRANSFERRING SAID COMPLETE PATTERN LAYER FROM SAID COMPOSITE SCREEN TO A SURFACE TO BE PRINTED.