. . "Typical examples of inorganic oxides which are useful as substrates include for example, substrates containing one or more alumino silicate, silica, sodium borosilicate, insoluble glass, soda lime glass, soda lime borosilicate glass, silica alumina, as well as such glasses and ceramics which are modified with, for example, another oxide such as titanium dioxide and/or small amounts of iron oxide." . . .