Abstract: A polymer-encapsulated colorant nanoparticle includes a colorant nanoparticle core, and a polymer coating established on the colorant nanoparticle core. A negatively chargeable functional group is present on a surface of the polymer-encapsulated colorant nanoparticle.

Abstract: A method of forming ionically-charged, colorant nanoparticles involves forming in-situ ionically-charged polyurethane monomers, and forming an emulsion including the ionically-charged polyurethane monomers and a colorant nanoparticle. The method further involves polymerizing or crosslinking the ionically-charged polyurethane monomers in the emulsion, where the polymerizing or crosslinking chemically attaches the ionically-charged polyurethane monomers to a surface of the colorant nanoparticle to form an ionically-charged encapsulation layer on the surface.

Abstract: A liquid electrophotographic ink is disclosed herein. One example of the liquid electrophotographic ink includes a non-polar carrier liquid; pigmented toner particles; a charge director; and polymer resin encapsulated metal oxide nanoparticles. A method for making the liquid electrophotographic ink is also disclosed herein.

Abstract: A liquid electrophotographic ink concentrate includes non-volatile solids present in an amount ranging from about 20% to about 70% of the ink concentrate, the non-volatile solids including encapsulated pigment particles having a particle size ranging from about 500 nm to about 20 ?m, and a viscosity modifier. The ink concentrate includes a balance of a liquid composition, the liquid composition including a carrier. The concentrate is dispersible in an ink vehicle to form a print-ready liquid electrophotographic ink having the non-volatile solids present in an amount ranging from about 0.5% to 5% of the print-ready liquid electrophotographic ink.

Abstract: A concentrated inkjet ink for packaging includes a liquid composition present in an amount that is less than 60 wt % of the concentrated inkjet ink, and nonvolatile solids present in an amount ranging from about 40 wt % to about 90 wt % of the concentrated inkjet ink. The nonvolatile solids include encapsulated pigment particles having a particle size ranging from about 50 nm to about 500 nm, and a dispersant. The concentrated inkjet ink is dispersible in an ink vehicle to form a print ready inkjet ink.

Abstract: Methods of surface modification of polymer particle are useful in the development of marking fluids. The surface modification includes saponifying one or more acrylic ester groups on a surface of the polymer particle.

Abstract: An ink forming method involves preparing a deagglomerated ink or a modified deagglomerated ink. The deagglomerated ink or the modified deagglomerated ink includes at least deagglomerated colorant particles and a liquid component. The deagglomerated colorant particles are chosen from pigment particles each encapsulated with a dispersant. The colorant particles have a particle size ranging from about 50 nm to about 500 nm. Prior to shipping and/or storing the deagglomerated ink or the modified deagglomerated ink, a portion of the liquid component is removed to form a concentrated ink that has a nonvolatile solids content ranging from about 40 wt % to about 90 wt % of the concentrated ink.

Abstract: Liquid electrophotographic ink concentrates and methods of preparing the same are disclosed herein. An example of the method includes preparing a mixture of ink components using a first predetermined thermal profile. The ink components include a resin, a pigment, and a carrier. The method further includes preparing a microfluidizer with a composition at a temperature within a predetermined range and processing the mixture in the prepared microfluidizer to form the concentrate. Processing the mixture includes pressure-feeding the mixture into the prepared microfluidizer, passing the mixture through the prepared microfluidizer for a predetermined number of times, and utilizing a second predetermined thermal profile while passing the mixture through the prepared microfluidizer. A viscosity modifier is added to the mixture before and/or during the processing of the mixture.

Abstract: A digital printing composition includes a carrier and a colorant. The carrier includes a hydrocarbon having at least one unsaturated bond. The hydrocarbon is configured to at least one of polymerize or crosslink in the presence of a charged species produced from a corona generator.

Abstract: A printing system (30, 40, 40?, 50, 50?) includes at least one ejector coupled to a reservoir (38) that is configured to contain a printing composition including a hydrocarbon having at least one unsaturated bond. The hydrocarbon is configured to at least one of polymerize or crosslink in the presence of a reactive species. The at least one ejector is configured to eject the printing composition onto a surface (34, 36, 10). The system (30, 40, 40?, 50, 50?) further includes a corona generator (32, 32?, 32?, 32?) configured to generate the reactive species in situ. The corona generator (32, 32?, 32?, 32?) is positioned with respect to the reservoir (38) such that the reactive species is exposed to the printing composition after the printing composition has been ejected onto the surface (34, 36, 10). The polymerizing and/or the cross-linking of the hydrocarbon is configured to form a polymer matrix (12) from the ejected printing composition.

Abstract: Ink composition including non-VOC liquid carrier and method of making the same are disclosed. A disclosed example ink composition has a viscosity that is below about 70.0 cps and includes non-VOC liquid carrier, dispersing agents and pigment particles having an average size of less than about 10 ?m. Also disclosed are method of use and method of making such ink composition containing non-VOC liquid carrier.

Abstract: An ink set includes a first ink and a second ink, where each of the inks has a conductivity that is less than 200 pS/cm. The first ink includes a first pigment of a first color; a carrier fluid; and a concentration of a dispersant. The second ink includes a second pigment of a second color that is different from the first color; the same carrier fluid as the first ink; and substantially the same concentration of the dispersant as the first ink.

Abstract: A polymer-encapsulated pigment and a method of modifying a pigment use functional groups of an interface layer to attach a polymer to a pigment composition. The polymer-encapsulated pigment includes a pigment composition, a polymer and an interface layer. In the polymer-encapsulated pigment and the method, the interface layer is covalently attached to an outer surface of the pigment composition. The polymer is attached to the interface layer with a linking group. The linking group is attached to the interface layer by a covalent bond of a functional group. The linking group includes a nucleophilic carbon atom to which the polymer is covalently attached.

Abstract: An ink composition includes a particulate pigment, a hydrocarbon vehicle, an organic polyamine and an organic polyacid. A ratio by weight percent of the organic polyamine to the organic polyacid in the hydrocarbon vehicle is sufficient to render a conductivity of the ink composition to equal to or less than 15 nanosiemens per centimeter. The ink composition is prepared by combining the particulate pigment with a composition that includes the hydrocarbon vehicle, the organic polyamine and the organic polyacid. The combination is subjected to conditions under which the particulate pigment becomes dispersed in the composition.

Abstract: The present disclosure provides methods and composition directed to towards a single batch latex ink-jet ink. In one embodiment, a method of manufacturing a single batch latex ink-jet ink can comprise emulsifying a pigment and a monomer in a solvent, and polymerizing the monomer with a reaction condition sufficient to encapsulate the pigment and sufficient to form individual latex particulates thereby forming a single batch latex ink-jet ink. The ink can contain less than about 0.5 wt % of latex particulates having a diameter of 50 nm or less, can contain about 1 wt % to about 10 wt % of latex particulates having a diameter of about 100 nm to about 250 nm and can contain about 3 wt % to about 5 wt % of encapsulated pigment.

Abstract: An apparatus for conducting single-pass filtration of ink waste is disclosed. The apparatus includes: a filter connected to a housing unit and a plurality of absorbent layers within the housing unit, wherein the plurality of absorbent layers are in any order and include: a layer for removing metal and polar compounds, a layer for removing non-polar color impurities, a layer for removing acid functional components, a layer for removing additives with polar or protic functional groups, and a layer for removing residual water. A process and a system that include or utilize the apparatus are also disclosed.

Abstract: Liquid electrophotographic ink concentrates and methods of preparing the same are disclosed herein. An example of the method includes preparing a mixture of ink components using a first predetermined thermal profile. The ink components include a resin, a pigment, and a carrier. The method further includes preparing a microfluidizer with a composition at a temperature within a predetermined range and processing the mixture in the prepared microfluidizer to form the concentrate. Processing the mixture includes pressure-feeding the mixture into the prepared microfluidizer, passing the mixture through the prepared microfluidizer for a predetermined number of times, and utilizing a second predetermined thermal profile while passing the mixture through the prepared microfluidizer. A viscosity modifier is added to the mixture before and/or during the processing of the mixture.

Abstract: A process for producing positively charged polymer encapsulated particles which have a size of less than 5 ?m and which include a positively charged polymer shell surrounding a core of particle. The process includes the steps of, firstly, dispersing the core particles in an aqueous solution; adding a mixture of monomers either before or after the dispersion step; then, polymerizing the monomers in view of obtaining polymer encapsulated particles, wherein the polymer shell of the particle includes polymers or co-polymers that have a functional group FG. Finally, the process includes the step of dispersing the encapsulated particles with surfactants and charge directors in view of obtaining positively charged encapsulated particle dispersions.

Abstract: Methods of surface modification of polymer particle are useful in the development of marking fluids. The surface modification includes saponifying one or more acrylic ester groups on a surface of the polymer particle.

Abstract: Methods of encapsulating particles (260) in polymer (280, 382, 384) and compositions of matter using such encapsulated particles (260). Methods include mixing particles (260) of one or more materials with one or more initial radical polymerizable monomers (265) and one or more initial charge-generating components (270) to form a first suspension of monomer-wetted particles (260/265/270), mixing the first suspension with an aqueous dispersant medium (275) to form a second suspension, adding one or more initial reaction initiators to at least one of the first suspension and the second suspension, subjecting the second suspension to homogenization sufficient to form a stable submicron emulsion having an aqueous continuous phase (275), and reacting available radical polymerizable monomers (265) of the emulsion to encapsulate the particles (260) in one or more layers of polymer (280, 382, 384) and to incorporate ionic species from available charge-generating components (270).