Phase change ink compositions
AssigneeXerox Corporation
InventorsRaymond W. Wong, Marcel P. Breton, Shadi L. Malhotra
Life of this patent
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Abstract
Disclosed is a phase change ink comprising (a) a carbamate or thiourea, said carbamate or thiourea having a melting point of no higher than about 120° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (b) a colorant, (c) a branched hydrocarbon with a number average molecular weight of no more than about 10,000 and a melting point or softening point of no more than about 120° C., (d) an optional plasticizer, (e) an optional alcohol having a melting point of less than about 90° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (f) an optional lightfastness-imparting agent, and (g) an optional antioxidant.
Claims49
A phase change ink comprising (a) a carbamate or thiourea, said carbamate or thiourea having a melting point of no higher than about 120° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (b) a colorant, (c) a branched hydrocarbon with a number average molecular weight of no more than about 10,000 and a melting point or softening point of no more than about 120° C., (d) an optional plasticizer, (e) an optional alcohol having a melting point of less than about 90° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (f) an optional lightfastness-imparting agent, and (g) an optional antioxidant.
A printing process which comprises (1) incorporating into a hot melt ink jet printing apparatus an ink composition comprising (a) a carbamate or thiourea, said carbamate or thiourea having a melting point of no higher than about 120° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (b) a colorant, (c) a branched hydrocarbon with a number average molecular weight of no more than about 10,000 and a melting point or softening point of no more than about 120° C., (d) an optional plasticizer, (e) an optional alcohol having a melting point of less than about 90° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (f) an optional lightfastness-imparting agent, and (g) an optional antioxidant;
- (2) melting the ink, and (3) causing droplets of the melted ink to be ejected in an imagewise pattern onto a recording substrate.
A printing process which comprises (1) incorporating into an acoustic ink jet printing apparatus an ink composition comprising (a) a carbamate or thiourea, said carbamate or thiourea having a melting point of no higher than about 120° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (b) a colorant, (c) a branched hydrocarbon with a number average molecular weight of no more than about 10,000 and a melting point or softening point of no more than about 120° C., (d) an optional plasticizer, (e) an optional alcohol having a melting point of less than about 90° C. and an acoustic loss value of no more than about 100 decibels per millimeter, (f) an optional lightfastness-imparting agent, and (g) an optional antioxidant;
- (2) melting the ink;
- and (3) causing droplets of the melted ink to be ejected by acoustic beams in an imagewise pattern onto a recording sheet.
Dependencies are inferred from the claim text.