Abstract: There is provided novel curable ink compositions comprising surfactant-coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least a coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink, and optionally a gellant. The inks may also include optional colorants and one or more optional additives. These curable UV ink compositions can be used for ink jet printing in a variety of applications.

Abstract: A lignosulfonate compound for phase change ink of the formula wherein R is hydrogen or and wherein the cationic counterion+ is a nitrogen-alkyl cationic counterion, a nitrogen-aryl cationic counterion, a nitrogen-alkylaryl cationic counterion, or a nitrogen arylalkyl cationic counterion; and wherein the cationic counterion contains at least eight carbon atoms.

Abstract: A phase change magnetic ink and process for preparing same including comprising a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a polymer coated magnetic nanoparticle comprising a magnetic core and a polymeric shell disposed thereover.

Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the solid ink composition comprises both a crystalline compound and an amorphous compound, and a fatty acid, which provides for a robust ink wherein the phase change ink crystallizes faster from the liquid state than the same composition without the fatty acid.

Abstract: A substantially colorless radiation overcoat composition suitable for overcoating ink-based images and xerographic-based images. The overcoat composition comprises at least one gellant, at least one monomer, at least one substantially non-yellowing photoinitiator, optionally a curable wax, and optionally a surfactant.

Abstract: A novel composition for use as a print head face plate coating. In particular, the coating comprises siloxyfluorocarbon (SFC), which is composed of networked precursors containing reactive siloxane groups attached to fluorocarbon chains. The present SFC coatings can be used to produce a surface whereby solid ink and ultraviolet (UV) curable inks do not adhere when applied at elevated temperatures and over an extended period of time. The advantages of the present coating are fewer print head related defects, and longer front face life.

Abstract: A process including disposing at least one phase separation ink in an imagewise fashion onto a final image receiving substrate to form an ink image, wherein disposing is at a first temperature at which the at least one phase separation ink is in a molten, unseparated state; cooling the ink image to a second temperature sufficient to initiate crystallization of at least one component of the at least one phase separation ink, wherein at the second temperature the at least one phase separation ink comprises a crystalline phase and an amorphous phase; wherein the amorphous phase of the at least one phase separation ink substantially penetrates into the final image receiving substrate; and wherein the crystalline phase of the at least one phase separation ink substantially remains on the surface of the final image receiving substrate; applying pressure to the ink image on the final image receiving substrate; and allowing the ink to complete crystallization.

Abstract: Exemplary embodiments provide a phase change ink composition including at least a first semi-crystalline material having a high amorphous content; and at least a second semi-crystalline material having a high crystalline content, such that the phase change ink has a viscosity ranging from about 0.1 cps to about 15 cps at a temperature ranging from about 60° C. to about 145° C. and the phase change ink composition has excellent robustness when forming images or printing on a printing substrate.

Abstract: Disclosed is a phase change ink comprising: (a) an ink carrier comprising a compostable paraffin or polymethylene wax; and (b) a colorant.

Abstract: A phase change ink composition including a carrier; a colorant; and an acidic wax which is present in an amount of 0.1 to less than about 6 percent by weight based on the total weight of the phase change ink composition.

Abstract: This disclosure is generally directed to curable phase change inks, such as radiation-curable phase change inks, and their use in forming images, such as through inkjet printing. More specifically, this disclosure is directed to radiation-curable phase change inks, such as ultraviolet-light-curable phase change inks, that an ink vehicle and at least one crystalline polyester resin.

Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a carbon coated magnetic nanoparticle comprising a magnetic core and a carbon shell disposed thereover.

Abstract: A process for fabricating oleophobic surface coatings to be deposited on a metal surface, such as the front-face or aperture plate of piezoelectric print heads and transfix rolls. The surface coatings are applied to the surface by electrochemical polymerization.

Abstract: A solid ink composition comprising an amorphous component, a crystalline material, and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates, and methods for making the same. In embodiments, the crystalline and amorphous components are synthesized from an esterification reaction of tartaric acid with an alcohol.

Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a surfactant coated magnetic nanoparticle having a magnetic core and a shell disposed thereover.

Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In particular, the solid ink composition comprises a crystalline compound, an amorphous compound, and an inorganic nucleating agent, which provides for a robust and fast printing ink.

Abstract: A phase change ink composition comprising a wax; an optional colorant; and a modified polysaccharide salt.

Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the solid ink composition comprises both a crystalline compound and an amorphous compound, and a fatty acid, which provides for a robust ink wherein the phase change ink crystallizes faster from the liquid state than the same composition without the fatty acid.

Abstract: A phase change ink composition includes a carrier; an optional colorant; and a lignosulfonate compound of the formula wherein R is hydrogen or and wherein the cationic counterion+ is a nitrogen-alkyl cationic counterion, a nitrogen-aryl cationic counterion, a nitrogen-alkylaryl cationic counterion, or a nitrogen arylalkyl cationic counterion; and wherein the cationic counterion contains at least eight carbon atoms.

Abstract: A lignosulfonate compound for phase change ink of the formula wherein R is hydrogen or and wherein the cationic counterion+ is a nitrogen-alkyl cationic counterion, a nitrogen-aryl cationic counterion, a nitrogen-alkylaryl cationic counterion, or a nitrogen arylalkyl cationic counterion; and wherein the cationic counterion contains at least eight carbon atoms.