Paste, useful for coloring sheet glass, comprises copper sulfate, an alkali metal sulfate e.g. sodium sulfate, and an infrared-absorbent e.g. magnetite, where the paste is screen printable

摘要

Paste comprises copper sulfate, at least one alkali metal sulfate and an infrared-absorbent, where: the paste is screen printable; and the weight ratio of copper sulfate to alkali metal sulfate is = 2:1. An independent claim is included for coloring sheet glass comprising applying the paste on a tin-containing surface of a sheet glass and then burning.