Patent GB-1082369-A (GB)
Title: Printing inks and the use thereof
IPC: H01B1/16
Filed: 1964-12-30
Abstract: An ink composition comprises a pigment in an amount of from 60 to 80% by weight of the ink composition, a liquid vehicle in an amount sufficient to impart an acceptable viscosity to the composition, a vaporizable solid in an amount sufficient to maintain dimensional stability of any line formed with the composition, said vehicle and said solid both being removable from the composition by heating thereof, and a binder material in amount sufficient to retain said pigment on a substrate when said vehicle and said solid are removed. "Vaporizable" includes sublimable and de-composable into gases on heating; the solid may be terephthalic acid, furoic acid, 2,4-dichlorobenzoic acid, anthranilic acid, naphthalene, methylnaphthalene, 2-methyl anthraquinone, 1,4-naphthaquinone, ammonium carbonate, ammonium carbamate-carbonate or ammonium chloroplumbate.  The composition may also include a fusible inorganic solid such as bismuth oxide, lead oxide, cadmium oxide, lithium fluoride or a glass or enamel frit.  The binder may be natural gum, glue, synthetic resin or cellulose material; examples show the use of ethyl cellulose, polystyrene resin, and mixtures thereof.  The vehicle may be a higher boiling paraffin, cycloparaffin, aromatic hydrocarbon or mixture thereof, or one or more of the "Cellosolves" (Registered Trade Mark) or carbitols, e.g. butyl carbitol acetate. The pigment may be carbon black, an organic dye, an iron compound, a glass or enamel frit, or for printed circuits powdered platinum, gold, silver or palladium.  Such inks are especially suitable for printed-image components, e.g. resistors and capacitors.ALSO:An ink composition comprises a pigment in an amount of from 60 to 80% by weight of the ink composition, a liquid vehicle in an amount sufficient to impart an acceptable viscosity to the composition, a vaporizable solid in an amount sufficient to maintain dimensional stability of any line formed with the composition, said vehicle and said solid both being removable from the composition by heating thereof, and a binder material in amount sufficient to retain said pigment on a substrate when said vehicle and said solid are removed. "Vaporizable" includes sublimable and decomposable into gases on heating; the solid may be terephthalic acid, furoic acid, 2,4-dichlorobenzoic acid, anthranilic acid, naphthalene, methylnaphthalene, 2-methyl anthraquinone, 1,4-naphthaquinone, ammonium carbonate, ammonium carbamate-carbonate or ammonium chloroplumbate.  The composition may also include a fusible inorganic solid such as bismuth oxide, lead oxide, cadmium oxide, lithium fluoride or a glass or enamel frit.  The binder may be a cellulose material; examples show the use of ethyl cellulose, polystyrene resin and mixtures thereof. The vehicle may be a higher boiling paraffin, cycloparaffin, aromatic hydrocarbon or mixture thereof, or one or more of the "Cellosolves" (Registered Trade Mark) or carbitols, e.g. butyl carbitol acetate.  The pigment may be carbon black, an organic dye, an iron compound, a glass or enamel frit, or for printed circuits powdered platinum, gold, silver or palladium.  Such inks are especially suitable for printed-image components, e.g. resistors and capacitors.ALSO:An ink composition comprises a pigment in an amount of from 60 to 80% by weight of the ink composition, a liquid vehicle in an amount sufficient to impart an acceptable viscosity to the composition, a vaporizable solid in an amount sufficient to maintain dimensional stability of any line formed with the composition, said vehicle and said solid both being removable from the composition by heating thereof, and a binder material in amount sufficient to retain said pigment on a substrate when said vehicle and said solid are removed, "Vaporizable" includes sublimable and decomposable into gases on heating; the solid may be terephthalic acid, furoic acid, 2,4-dichlorobenzoic acid, anthranilic acid, naphthalenemethylnaphthalene, 2 - methyl anthraquinone, 1,4 - naphthaquinone, ammonium carbonate, ammonium carbamate - carbonate or ammonium chloroplumbate.  The composition may also include a fusible inorganic solid such as bismuth oxide, lead oxide, cadmium, oxide, lithium fluoride or a glass or enamel frit.  The binder may be natural gum, glue, synthetic resin or cellulose material; examples show the use of ethyl cellulose, polystyrene resin, and mixtures thereof.  The vehicle may be a higher boiling paraffin, cycloparaffin, aromatic hydrocarbon or mixture thereof, or one or more of the "Cellosolves" (Registered Trade Mark) or carbitols, e.g. butyl carbitol acetate.  The pigment may be carbon black, an organic dye, an iron compound, a glass or enamel frit, or for printed circuits powdered platinum, gold, silver or palladium.  Such inks are especially suitable for printed-image components, e.g. resistors and capacitors.