Rapidly drying impulse ink jet ink compositions
AssigneeTrident Limited
InventorsTheodore M. Cooke, Wilfred F. Reed
Life of this patent
Estimating the term…
Abstract
Impulse-type ink jet ink compositions and processes for recording information therewith are provided. The ink compositions dry to the touch more rapidly than the impulse-type inks known in the art. The rapid-drying characteristics are believed to be attributable to their relatively low viscosities. The ink compositions preferably comprise from about 80 to about 99 percent by weight of a liquid vehicle which consists essentially of an organic solvent having a viscosity less than about 7.0 centipoise at 20.degree. C. and from about 1 to about 15 percent by weight of a colorant. The ink compositions are suitable for printing alphanumeric text or bar codes on highly calendared paper or other non-absorbent surfaces.
Claims27
An ink composition for use in impulse ink jet printers, comprising:
- from about 80 to about 99 percent by weight of a liquid vehicle which consists essentially of an organic solvent having a viscosity less than about 7.0 centipoise at 20.degree. C.;
- and
- from about 1 to about 20 percent by weight of a colorant;
- wherein said ink composition is substantially free of electrolytic moieties.
An ink composition for use in impulse ink jet printers, comprising:
- about 95 percent by weight of diethylene-glycol monoethyl ether;
- and
- about 5 percent by weight of a Nigrosine dye.
A process for recording information on a substrate, comprising the steps of:
- providing an ink composition which is substantially free of electrolytic moieties and which comprises:
- from about 80 to about 99 percent by weight of a liquid vehicle which consists essentially of an organic solvent having a viscosity less than about 7.0 centipoise at 20.degree. C.;
- and
- from about 1 to about 20 percent by weight of a colorant;
- ejecting one or more droplets of the ink composition from an orifice by the selective application of pressure;
- and
- contacting the droplets with a receiving surface on the substrate.
Dependencies are inferred from the claim text.