Isocyanate-derived colored resins for use in phase change ink jet inks
AssigneeTektronix, Inc.
InventorsDonald R. Titterington, Jeffery H. Banning, Loc V. Bui, Clifford R. King
Life of this patent
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Abstract
Isocyanate-derived colored resins made by reacting an alcohol and/or amine, an isocyanate and a nucleophilic molecule containing a chromogen are disclosed. The isocyanate-derived colored resins are useful as colorant materials in phase change ink compositions.
Claims35
An isocyanate-derived colored resin comprising the reaction product of:
- (a) an isocyanate;
- and
- (b) at least one chromogen-containing nucleophile.
An isoryanate-derived colored resin comprising the reaction product of:
- (a) an isocyanate;
- (b) a first nucleophile selected from the group consisting of at least one alcohol, at least one amine, and mixtures thereof;
- and
- (c) at least one chromogen-containing second nucleophile.
A phase change ink composition comprising in combination:
- (a) a mono-amide;
- (b) a tackifier;
- and
- (c) a colorant comprising at least one colored isocyanate-derived resin.
A method for producing a layer of phase change colored ink on a surface of a substrate, which comprises:
- (1) forming a phase change ink composition in the solid phase comprising an admixture of (a) a phase change carrier composition and (b) a compatible phase change colorant comprising at least one colored isocyanate-derived resin formed by the reaction of an isocyanate precursor and at least one alcohol;
- (2) transferring said solid phase, phase change color ink composition to a phase change ink application means;
- (3) raising the operating temperature of said application means to a level whereby a liquid phase, phase change colored ink composition is formed;
- (4) providing a substrate in proximity to said application means;
- (5) applying a predetermined pattern of said liquid phase, phase change colored ink composition to at least surface of said substrate;
- and
- (6) lowering the temperature of said applied ink composition to form a solid phase, phase change ink pattern on the substrate.
A method for producing a layer of phase change colored ink on a surface of a substrate, which comprises:
- (1) employing in a printing apparatus a phase change ink composition in the solid phase comprising an admixture of (a) a phase change carrier composition and (b) a compatible phase change colorant comprising at least one colored isocyanate-derived resin formed by the reaction of an isocyanate precursor and at least one alcohol;
- (2) applying the phase change ink composition in a desired pattern to an intermediate transfer surface;
- and
- (3) transferring the desired pattern of the phase change ink composition to the surface of the substrate.
Dependencies are inferred from the claim text.