Acoustic ink compositions
AssigneeXerox Corporation
InventorsFatima M. Pontes, Guerino G. Sacripante, Stephan V. Drappel, Anthony J. Paine, Gregory J. Kovacs
Life of this patent
Estimating the term…
Abstract
An ink composition comprised of a colorant and a vehicle of a poly(alkylene oxide)-alkylate (I), a poly(alkylene oxide)-dialkylate (II), a polyoxa-alkanoate ester (III), or a polyoxa-alkanedioate diester (IV), and which ink possesses a viscosity of from about 1 centipoise to about 15 centipoise at a temperature of from about 125.degree. C. to about 165.degree. C., and which vehicle is of the formulas ##STR1## wherein R is alkyl, R' is an alkylene, or arylene, and n is an integer of from about 2 to about 20.
Claims38
An ink composition comprised of a colorant and a vehicle of a poly(alkylene oxide)-alkylate (I), a poly(alkylene oxide)-dialkylate (II), a polyoxa-alkanoic ester (III), or a polyoxa-alkaneoic diester (IV), and which ink possesses a viscosity of from about 1 centipoise to about 15 centipoise at a temperature of from about 125.degree. C. to about 165.degree. C., and which vehicle is of the formulas ##STR3## wherein R is alkyl, R' is an alkylene, or arylene, and n is an integer of from about 2 to about 20.
A printing process which comprises (a) incorporating into an acoustic ink jet printer an ink composition comprised of a colorant and a vehicle of a poly(alkylene oxide)-alkylate (I), a poly(alkylene oxide)-dialkylate (II), a polyoxa-alkanoic ester (III) or a polyoxa-alkanedoic diester (IV), and which ink possesses a viscosity of from about 1 centipoise to about 15 centipoise at a temperature of from about 125.degree. C. to about 165.degree. C., and which vehicle is of the formulas ##STR4## wherein R is alkyl with from 1 to about 50 carbon atoms, n is an integer of from about 2 to about 20, and R' is alkylene with from about 2 to about 50 carbon atoms;
- and (b) causing droplets of the ink to be ejected in an imagewise pattern onto a substrate.
A process which comprises 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 vehicle of a poly(alkylene oxide)-alkylate (I), a poly(alkylene oxide)-dialkylate (II), a polyoxa-alkanoic ester (III), or a polyoxa-alkanedioic diester (IV);
- and said ink possessing a viscosity of from about 1 centipoise to about 15 centipoise at a temperature of from about 125.degree. C. to about 165.degree. C.
Dependencies are inferred from the claim text.