Patent ID: 7438973
Filing Date: 2008-10-21
Classification: B41M,B44C,Y10T

Abstract:
1. A digitally printed assembly comprised of a substrate and, disposed on said substrate, a digitally printed ceramic ink image, wherein said ceramic ink image comprises from about 15 to about 94.5 weight percent of a solid, volatilizable carbonaceous binder, from about 5 to about 75 weight percent of a film-forming frit comprised of at least 5 weight percent of silica, and at least about 0.5 weight percent of a metal oxide containing ceramic colorant selected from the group consisting of metal oxide containing pigment, metal oxide containing opacifying agent, and mixtures thereof, and wherein: (a) said metal oxide containing ceramic colorant has a first refractive index, and such film-forming frit has a second refractive index, such that the difference between said first refractive index and said second refractive index is at least 0.1; (b) said metal oxide containing ceramic colorant has a first melting point, and said film-forming frit has a second melting point, such that said first melting point exceeds said second melting point by at least about 100 degrees Celsius; and (c) said metal oxide containing ceramic colorant has a first concentration in said ceramic ink layer, said film-forming frit has a second concentration in said ceramic ink layer, such that the ratio of said first concentration to said second concentration is no greater than about 1.25.