Photographs on ceramic or ceramic-like surfaces

Abstract

Abstract CERAMIC OBJECTS ARE CONVENIENTLY DECORATED USING PHOTOGRAPHIC TECHNIQUES BY FIRST PREPARING THE SURFACE OF THE OBJECT IN ANY CONVENTINAL MANNER, FOR EXAMPLE, BY FIRST FIRING THE GREEN OBJECT TO BISQUE TEMPERATURE, ALLOWING THE OBJECT TO COOL, WASHING IT WITH AN ALKALINE SOLVENT, AND DRYING IT. TO THE PREPARED SURFACE IS THEN APPLIED PRIMING COAT WHICH IS GENERALLY A MIXTURE OF VOLCANIC ASH, KAOLIN, AND A WATER-INSOLUBLE CARBONATE OF A GROUP II ELEMENT OF ATOMIC NUMBER 12 TO 56 ALL UNIFORMLY DISPERSED IN WATER. THE PRIMING COAT IS ALLOWED TO DRY AND THE OBJECT IS THEN FIRED TO BISQUE TEMPERATURE AROUND CONE 08. UPON COOLING, A PHOTOGRAPHIC EMULSION CONTAINNG AN IMAGE FORMING COMPONENT IS APPLIED TO THE COATED OBJECT UNDER CONDITIONS CONVENTIONAL TO THE PHOTOGRAPHIC ART. THE OBJECT WITH THE NOW PHOTOSEMSITIVE SURFACE IS THEN EXPOSED BY CONVENTIONAL PHOTOGRAPHIC TECHNIQUES AND PROCESSED TO DEVELOP THE IMAGE. THE ENTIRE OBJECT IS THEREAFTER PLACED IN A FURNACE AND HEATED AT A RATE NOT TO EXCEED 40*F. PER HOUR TO 500*F., THEN AT A RATE NOT TO EXCEED 80*F. PER HOUR TO FROM 1250*F. TO 1500*F. AND THEN ALLOWED TO COOLE SLOWLY TO AMBIENT TEMPERATURE. THE OBJECT THUS OBTAINED HAS A GLAZED BLACK AND WHITE SILVER IMAGE OF LASTING DURABILITY.

Inventors

• 👤 Victor Spinski

Bibliographic Details