Hot melt ink compositions
AssigneeXerox Corporation
InventorsGuerino G. Sacripante, Fatima M. Pontes, Stephan V. Drappel, Anthony J. Paine, Gregory J. Kovacs
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Abstract
An ink composition comprised of a colorant and a bisamide with a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which bisamide is of the formula ##STR1## wherein R is an alkyl of from about 2 to about 30 carbon atoms or aryl; R' is an alkylene with from about 2 to about 30 carbon atoms, or R' is a polyalkyleneoxide with from about 2 to about 30 carbon atoms.
Claims27
An ink composition consisting essentially of a colorant and a bisamide with a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which bisamide is of the formula ##STR6## wherein R is alkyl with from 1 to about 25 carbon atoms, and R' is alkylene with from about 2 to about 25 carbon atoms.
A printing process which comprises incorporating into an acoustic ink jet printer an ink comprised of a colorant and a bisamide with a viscosity of from about 5 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which bisamide is of the formula ##STR7## wherein R is an alkyl with from about 2 to about 30 carbon atoms or phenyl;
- R' is an alkylene with from about 2 to about 30 carbon atoms, or R' is a polyalkyleneoxide with from about 2 to about 30 carbon atoms;
- and causing droplets of the ink to be ejected in imagewise pattern onto a substrate.
A process which comprises (a) providing an acoustic ink printer having a pool of liquid ink with a free surface, and a printhead including at least one droplet ejector for radiating the free surface of said ink with focused acoustic radiation to eject individual droplets of ink therefrom on demand, said radiation being brought to focus with a finite waist diameter in a focal plane, said ink comprising a colorant and a bisamide with a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which amide is of the formula ##STR8## wherein R is an alkyl of from about 2 to about 50 carbon atoms, or a phenyl group;
- R' is an alkylene or a polyalkyleneoxide, each with from about 2 to about 30 carbon atoms;
- and (b) causing droplets of said ink to be ejected onto a recording sheet in an imagewise pattern at a temperature of from about 120.degree. C. to about 185.degree. C.
An ink composition consisting of a colorant and a bisamide with a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which bisamide is of the formula ##STR9## wherein R is an alkyl of from about 2 to about 30 carbon atoms or aryl;
- R' is an alkylene with from about 2 to about 30 carbon atoms, or R' is a polyalkyleneoxide with from about 2 to about 30 carbon atoms.
An ink composition consisting of a colorant and a bisamide with a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which bisamide is of the formula ##STR10## wherein R is an alkyl of from about 2 to about 30 carbon atoms or aryl;
- R' is a polyalkyleneoxide with from about 2 to about 30 carbon atoms.
Dependencies are inferred from the claim text.