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AssigneeXerox Corporation
InventorsJohn W. Spiewak, James R. Larson, Frank J. Bonsignore
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A positively charged liquid developer comprised of liquid, thermoplastic resin particles, optional pigment, a charge director, and an insoluble charge adjuvant comprised of a copolymer of an alkyl acrylamidoglycolate alkyl ether and an alkenylester, and wherein the charge adjuvant is associated with or combined with said resin and said optional pigment, and which charge adjuvant is of the formula ##STR1## wherein R.sup.1 is hydrogen or alkyl of 1 to 20 carbons; R.sup.2 is H, alkyl of 1 to 20, aryl of 6 to 20 carbons, and aryl alkyl of 7 to 35 carbons; m is from 0 to about 10; and wherein the alkyl and aryl groups optionally contain heteroatoms of F, Cl, O, S, N, Si, and P; R.sup.3 and R.sup.4 are alkyl; and x and y represent the number of segments.
A positively charged liquid developer comprised of liquid, thermoplastic resin particles, optional pigment, a charge director, and an insoluble charge adjuvant comprised of a copolymer of an alkyl acrylamidoglycolate alkyl ether and an alkenylester, and which charge adjuvant is of the formula ##STR5## wherein R.sup.1 is hydrogen or alkyl of 1 to 20 carbons;
A positively charged liquid electrostatographic developer comprised of (A) a liquid with a viscosity of from about 0.5 to about 20 centipoise and resistivity greater than or equal to about 5.times.10.sup.9 ohm-cm;
An imaging method which comprises forming an electrostatic latent image followed by the development thereof with a positively charged liquid developer comprised of liquid, thermoplastic resin particles, optional pigment, a charge director, and an insoluble charge adjuvant comprised of a copolymer of an alkyl acrylamidoglycolate alkyl ether and an alkenylester, and which charge adjuvant is of the formula ##STR6## wherein R.sup.1 is hydrogen or alkyl of 1 to 20 carbons;
Dependencies are inferred from the claim text.