US 7,442,242 B2Granted

Phase change inks containing specific colorants

AssigneeXerox Corporation

InventorsBo Wu, Trevor J. Snyder, Jeffrey H. Banning, Jule W. Thomas, Jr.

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Abstract

Disclosed is a phase change ink composition comprising (a) a phase change ink carrier comprising (1) an amide; and (2) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.5; and (b) a colorant compound of the formula or mixtures thereof, wherein R1, R2, R3, M, A, E, G, J, m, n, and p are as defined herein.

Claims103

Dependent claims

A phase change ink composition comprising (a) a phase change ink carrier comprising (1) an amide;

and (2) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.5;
and (b) a colorant compound of the formula
or mixtures thereof, wherein R1, R2, and R3 each, independently of the others, is a hydrogen atom, an alkyl group, including linear and branched, saturated and unsaturated, cyclic and acyclic, and substituted and unsubstituted alkyl groups, and wherein hetero atoms either may or may not be present in the alkyl group, an arylalkyl group, including substituted and unsubstituted arylalkyl groups, wherein the alkyl portion of the arylalkyl group can be linear or branched, saturated or unsaturated, cyclic or acyclic, and substituted or unsubstituted, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the arylalkyl group, or an alkylaryl group, including substituted and unsubstituted alkylaryl groups, wherein the alkyl portion of the alkylaryl group can be linear or branched, saturated or unsaturated, cyclic or acyclic, and substituted or unsubstituted, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the alkylaryl group, provided that the total number of carbon atoms and hetero atoms (excluding atoms in any substituents) in R1+R2+R3 is at least about 18, M is a metal atom, each A, each E, and each G, independently of the other, represents a substituent on a phenyl or pyrazolone ring, wherein G can also be a hydrogen atom, m is an integer of 0, 1, or 2, p is an integer of 0, 1, 2, 3, or 4, J represents (i) a hydrogen atom, (ii) an alkyl group (including linear and branched, saturated and unsaturated, cyclic and acyclic, and substituted and unsubstituted alkyl groups, and wherein hetero atoms either may or may not be present in the alkyl group), (iii) an aryl group (including substituted and unsubstituted aryl groups, and wherein hetero atoms either may or may not be present in the aryl group), (iv) an arylalkyl group (including substituted and unsubstituted arylalkyl groups, wherein the alkyl portion of the arylalkyl group can be linear or branched, saturated or unsaturated, and cyclic or acyclic, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the arylalkyl group), or (v) an alkylaryl group (including substituted and unsubstituted alkylaryl groups, wherein the alkyl portion of the alkylaryl group can be linear or branched, saturated or unsaturated, and cyclic or acyclic, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the alkylaryl group), wherein two or more substituents on the phenyl or pyrazolone rings can be joined together to form a ring, and n represents an integer of 1, 2, or 3.

A process which comprises (1) incorporating into an ink jet printing apparatus a phase change ink composition comprising (a) a phase change ink carrier comprising (1) an amide;

and (2) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.5;
and (b) a colorant compound of the formula
or mixtures thereof, wherein R1, R2, and R3 each, independently of the others, is a hydrogen atom, an alkyl group, including linear and branched, saturated and unsaturated, cyclic and acyclic, and substituted and unsubstituted alkyl groups, and wherein hetero atoms either may or may not be present in the alkyl group, an arylalkyl group, including substituted and unsubstituted arylalkyl groups, wherein the alkyl portion of the arylalkyl group can be linear or branched, saturated or unsaturated, cyclic or acyclic, and substituted or unsubstituted, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the arylalkyl group, or an alkylaryl group, including substituted and unsubstituted alkylaryl groups, wherein the alkyl portion of the alkylaryl group can be linear or branched, saturated or unsaturated, cyclic or acyclic, and substituted or unsubstituted, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the alkylaryl group, provided that the total number of carbon atoms and hetero atoms (excluding atoms in any substituents) in R1+R2+R3 is at least about 18, M is a metal atom, each A, each E, and each G, independently of the other, represents a substituent on a phenyl or pyrazolone ring, wherein G can also be a hydrogen atom, m is an integer of 0, 1, or 2, p is an integer of 0, 1, 2, 3, or 4, J represents (i) a hydrogen atom, (ii) an alkyl group (including linear and branched, saturated and unsaturated, cyclic and acyclic, and substituted and unsubstituted alkyl groups, and wherein hetero atoms either may or may not be present in the alkyl group), (iii) an aryl group (including substituted and unsubstituted aryl groups, and wherein hetero atoms either may or may not be present in the aryl group), (iv) an arylalkyl group (including substituted and unsubstituted arylalkyl groups, wherein the alkyl portion of the arylalkyl group can be linear or branched, saturated or unsaturated, and cyclic or acyclic, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the arylalkyl group), or (v) an alkylaryl group (including substituted and unsubstituted alkylaryl groups, wherein the alkyl portion of the alkylaryl group can be linear or branched, saturated or unsaturated, and cyclic or acyclic, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the alkylaryl group), wherein two or more substituents on the phenyl or pyrazolone rings can be joined together to form a ring, and n represents an integer of 1, 2, or 3;
(2) melting the ink;
and (3) causing droplets of the melted ink to be ejected in an imagewise pattern onto a substrate.

2 more elements

Dependencies are inferred from the claim text.

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Abstract

A phase change ink composition comprising (a) a phase change ink carrier comprising (1) an amide;

and (2) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.5;
and (b) a colorant compound of the formula
or mixtures thereof, wherein R1, R2, and R3 each, independently of the others, is a hydrogen atom, an alkyl group, including linear and branched, saturated and unsaturated, cyclic and acyclic, and substituted and unsubstituted alkyl groups, and wherein hetero atoms either may or may not be present in the alkyl group, an arylalkyl group, including substituted and unsubstituted arylalkyl groups, wherein the alkyl portion of the arylalkyl group can be linear or branched, saturated or unsaturated, cyclic or acyclic, and substituted or unsubstituted, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the arylalkyl group, or an alkylaryl group, including substituted and unsubstituted alkylaryl groups, wherein the alkyl portion of the alkylaryl group can be linear or branched, saturated or unsaturated, cyclic or acyclic, and substituted or unsubstituted, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the alkylaryl group, provided that the total number of carbon atoms and hetero atoms (excluding atoms in any substituents) in R1+R2+R3 is at least about 18, M is a metal atom, each A, each E, and each G, independently of the other, represents a substituent on a phenyl or pyrazolone ring, wherein G can also be a hydrogen atom, m is an integer of 0, 1, or 2, p is an integer of 0, 1, 2, 3, or 4, J represents (i) a hydrogen atom, (ii) an alkyl group (including linear and branched, saturated and unsaturated, cyclic and acyclic, and substituted and unsubstituted alkyl groups, and wherein hetero atoms either may or may not be present in the alkyl group), (iii) an aryl group (including substituted and unsubstituted aryl groups, and wherein hetero atoms either may or may not be present in the aryl group), (iv) an arylalkyl group (including substituted and unsubstituted arylalkyl groups, wherein the alkyl portion of the arylalkyl group can be linear or branched, saturated or unsaturated, and cyclic or acyclic, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the arylalkyl group), or (v) an alkylaryl group (including substituted and unsubstituted alkylaryl groups, wherein the alkyl portion of the alkylaryl group can be linear or branched, saturated or unsaturated, and cyclic or acyclic, and wherein hetero atoms either may or may not be present in either the aryl or the alkyl portion of the alkylaryl group), wherein two or more substituents on the phenyl or pyrazolone rings can be joined together to form a ring, and n represents an integer of 1, 2, or 3.