Ink composition for jet printing onto non-absorbent surfaces
AssigneeA. B. Dick Company
InventorsKi-Sup Hwang, Daniel M. Zabiak
Life of this patent
Estimating the term…
Abstract
An ink composition for jet printing onto non-porous-non-absorbent surfaces based upon a ketone solvent having a soluble ionizable salt and a dyestuff and which may contain in addition water in an amount up to 10% by weight, a lower alcohol in an amount up to 8% by weight, a pyrrolidone in an amount up to 4% by weight, a carbitol in an amount up to 4% by weight and a vinyl acetate copolymer resinous binder in an amount up to 6% by weight, the jet printing ink composition having a viscosity within the range of 1.5 to 10 cps, a resistance less than 2000 ohm-cm, a surface tension less than 28 dyne/cm, a velocity of sound within the range of 1200-1700 m/sec, and an upper limit of 5 microns and preferably 2 microns insolubles.
Claims15
An ink composition for jet printing onto non-porous non-absorbent surfaces comprising a solvent component the major portion of which is one or more organic ketones present in an amount of at least 64% by weight of the ink composition, and in which water may be present in an amount that does not exceed 10% by weight, a soluble ionizable salt present in solution in an amount within the range of 0.25 to 2.0% by weight, and an organic dyestuff soluble in the solvent component and present in an amount of at least 0.25% by weight, said ink composition having a viscosity within the range of 1.5 to 10 cps, a resistance less than 2000 ohm-cm, a surface tension of less than 28 dynes/cm, a velocity of sound within the range of 1200-1700 m/sec, and no particles having a dimension greater than 5 microns.
Dependencies are inferred from the claim text.