GLASS COLORING AGENT FOR PRODUCING RECYCLABLE BLACK GLASS ENAMEL, PRINTING PASTE, METHOD FOR PRODUCING TRANSCRIPT AND BLACK ENAMEL, AND ENAMELED GLASS SUPPORTER

摘要

PROBLEM TO BE SOLVED: To provide a glass coloring agent for producing a recyclable black glass enamel, whose pigment contains manganese but no chromium, cobalt, nickel and/or copper. SOLUTION: A glass coloring agent for producing a recyclable black glass enamel containing a glass flux which comprises one or more glass frits and a manganese-containing pigment. The glass coloring agent contains a (Fe, Mn)2O3 brown pigment having a bixbyite structure. The above glass frit is substantially selected from a series of glass frits substantially based on an alkali metal-Bi-borosilicate and/or potassium-Ti-borosilicate, and containing no Pb nor Zn.