Patent ID: 8092911

Claim:
A fired article comprising, prior to firing: a. a glass substrate, b. a lead-free and cadmium-free enamel frit coating excluding pigments and comprising, prior to firing, i. 85 to 99.9 wt % of a glass component excluding Bi 2 O 3 and comprising 1. about 10 to about 15% B 2 O 3 , about 8 to about 55 wt % SiO 2 , about 10 to about 20% ZnO, about 8 to about 12% Na 2 O, about 1 to about 5% fluorine, and 0 to about 3% TiO 2 , and 2. optionally including up to 10% ZrO 2 , up to 7% Al 2 O 3 , up to 10% K 2 O, up to 12% Li 2 O, up to 18% Nb 2 O 5 , up to 7% CeO 2 , up to 10% BaO, up to 10% CaO, up to 10% SrO, up to 10% SnO, up to 10% P 2 O 5 , up to 5% MgO, up to 7% Y 2 O 3 , up to 4% MoO, up to 4% W 2 O 3 , and up to 3% sulfur, ii. 0.1 to 15 wt % of a crystalline component comprising at least one crystalline material selected from the group consisting of bismuth silicates, zinc silicates, bismuth titanates, zinc borates, zinc titanates, silicon zirconates, bismuth zirconates, alumino silicates, calcium silicates, and combinations thereof, in order to impart a matte effect, and iii. no pigment, wherein after being fired at a temperature of 500° C. to 700° C., the coating produces a matte-effect coated substrate having a light transmittance value at 550 nm of at least about 0.5%.