Abstract: A degassing apparatus for a liquid delivery system is provided. The degassing apparatus includes a first chamber disposed along a liquid delivery path to capture gas within the liquid delivery path. The degassing apparatus also includes a set of membranes having at least one membrane, the set of membranes disposed along the liquid delivery path to selectively allow the gas to pass through the set of membranes. The degassing apparatus further includes a second chamber disposed above the set of membranes to evacuate the gas from the first chamber. Moreover, the degassing apparatus includes a one-way valve configured to vent the gas from the second chamber when pressure inside the second chamber exceeds a first predetermined value.

Abstract: Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.

Abstract: Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.

Abstract: A solubilizing agent and a compound made by reacting selected nucleophiles, including fatty acid reactants and amines with an isocyanate are disclosed. The addition of the isocyanate and the different nucleophiles will create a di-urethane tetra-amide solubilizing agent product. The polyamide-solubilizing agent is useful as an ingredient in a phase change solid imaging material and as carrier compositions used to make phase change ink jet inks.

Abstract: Phase change compositions that are solid at ambient temperature and liquid at an elevated temperature above ambient temperature are disclosed for advantageous use in selective deposition modeling methods for building three-dimensional objects. A phase change composition according to the disclosed invention is a semi-crystalline component mixture having a freezing point of at least about 68° C., a melting point of at least about 88° C. and a viscosity of about 13 centipoise at 135° C. The composition includes a plurality of waxes having a broad melting point range and molecular weight range. Three-dimensional objects having minimal curl, delamination and stress cracks can be produced at a faster rate than heretofore known by using selective deposition modeling techniques employing the disclosed compositions.

Abstract: A component to control the viscosity of phase change material formulations is made by reacting selected nucleophiles, including fatty acid/alcohol reactants with an isocyanate, is disclosed. The addition of the isocyanate and the different nucleophiles will create a viscosity modifying component of low viscosity that can be formulated with higher molecular weight polyamide resins to achieve increased toughness in phase change solid imaging materials and carrier compositions used to make phase change ink jet inks.

Abstract: A method, system and apparatus for forming a three-dimensional object on a layer-by-layer basis involves forming a portion of the three-dimensional object using selective deposition modeling (SDM). SDM involves using at least one orifice, such as a jet, which dispenses a droplet of a flowable material that solidifies upon being dispensed. A drop volume capability of each orifice is adjusted until substantially all orifices have a uniform drop volume capability and all dispensed droplets of the flowable material have a uniform volume.

Abstract: Phase change compositions that are solid at ambient temperature and liquid at an elevated temperature above ambient temperature are disclosed for advantageous use in selective deposition modeling methods for building three-dimensional objects. A phase change composition according to the disclosed invention is a semi-crystalline component mixture having a freezing point of at least about 68.degree. C., a melting point of at least about 88.degree. C. and a viscosity of about 13 centipoise at 135.degree. C. The composition includes a plurality of waxes having a broad melting point range and molecular weight range. Three-dimensional objects having minimal curl, delamination and stress cracks can be produced at a faster rate than heretofore known by using selective deposition modeling techniques employing the disclosed compositions.

Abstract: A solubilizing agent and a compound made by reacting selected nucleophiles, including fatty acid reactants and amines with an isocyanate are disclosed. The addition of the isocyanate and the different nucleophiles will create a di-urethane tetra-amide solubilizing agent product. The polyamide-solubilizing agent is useful as an ingredient in a phase change solid imaging material and as carrier compositions used to make phase change ink jet inks.

Abstract: Reactive ink compositions of the present invention utilize at least two reactive components, a base ink component and a curing component, that are applied to a receiving substrate separately. The base ink component includes an ink carrier, a compatible colorant, and a cross-linkable constituent, and the curing component is a cross-linking agent. Upon exposure of the base ink component to the curing component, at least a portion of the ink is cross-linked to provide a printed image that is durable and abrasion-resistant.

Abstract: A phase change ink composition is disclosed wherein the ink composition utilizes colorant in combination with a selected phase change ink carrier composition containing at least one hydroxy-functional fatty amide compound.

Abstract: Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of diurethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.

Abstract: Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of diurethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.

Abstract: A method and an apparatus for processing an image transparency entails the application of an intermediate transfer surface of a layer of sacrificial liquid to a supporting surface and the deposition of a phase change ink onto the liquid layer. The inked image is then contact transferred to an optically transmissive final receiving substrate, such as a plastic transparency.

Abstract: Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.

Abstract: Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.

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.

Abstract: Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.

Abstract: A non-erasable ink-jet composition that is the admixture of (1) an aqueous colored polyurethane dispersion that is the reaction product of (a) a colored urethane prepolymer that is the catalyzed reaction product of at least one polyol; at least one polyisocyanate; at least one internal surfactant; and at least one reactive colorant; wherein the ratio of internal surfactant to polyol and the ratio of NCO groups to total OH groups are predetermined stoichiometric equivalent molar ratios; (b) at least one neutralizing agent; (c) a first aqueous dispersing medium; and (d) at least one chain extender; (2) a second aqueous medium; and (3) at least one humectant; wherein the ink composition has a jettable viscosity from about 1 to about 20 centipoise at about 10.degree. C. to about 45.degree. C.

Abstract: Reactive ink compositions of the present invention utilize at least two reactive components, a base ink component and a curing component, that are applied to a receiving substrate separately. The base ink component includes an ink carrier, a compatible colorant, and a cross-linkable constituent, and the curing component is a cross-linking agent. Upon exposure of the base ink component to the curing component, at least a portion of the ink is cross-linked to provide a printed image that is durable and abrasion-resistant.