Abstract: Ink vehicles having improved gellant solubility and ink compositions including such ink vehicles are provided. Exemplary ink vehicles include first and second co-monomers, and a gellant that includes that includes a curable epoxy-polyamide composite gellant; in which the first and second co-monomers are radiation curable are different from each other. Additional exemplary ink vehicles include at least two chemically distinct gellants. The chemically distinct gellant materials include a first gellant that includes a curable epoxy-polyamide composite gellant, and a second gellant that includes an amide gellant. Methods for making and using these ink vehicles and ink compositions are also provided.

Abstract: Processes for preparing diacryl-functional compounds are provided. Processes include reacting AB2 monomers with acryloyl halides, and then further reacting with long-chain, mono-functional aliphatic compounds to form long-chain diacrylates. Further processes include reacting difunctional tic compounds with acrylic acid to form difunctional diacrylate, and diacrylamide compounds.

Abstract: An electrophoretic display medium includes one or more set of colored particles in a dielectric fluid, wherein the display medium has an electrical conductivity of about 10?11 to about 10?15 S/m, and wherein at least one of the one or more set of particles include crosslinked emulsion aggregation polymer particles. The display medium is included in an electrophoretic display device by including the medium in a multiplicity of individual reservoirs of a display layer or layers that is located between conductive substrates.

Abstract: A radiation curable phase change ink comprising a white colorant; a colorant dispersant; and an ink vehicle comprising at least one curable monomer; at least one gellant; optionally at least one photoinitiator; optionally at least one stabilizer; and optionally at least one wax.

Abstract: A nanoscale pigment particle composition includes an organic monoazo laked pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.

Abstract: A nonpolar or solid or phase change ink composition which includes a carrier and a nanoscale pigment particle composition, which nanoscale pigment particle composition includes a quinacridone pigment molecules including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer, and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.

Abstract: A nanoscaled pigment particle composition includes an organic monoazo laked pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.

Abstract: A solid phase change ink composition that includes an ink vehicle, a colorant, and at least one naturally derived material. At least one naturally derived material is a low melt material having an onset of melting from about 45° C. to about 120° C., and a melt transition width of from about 3° C. to about 30° C. Also provided is a method for producing a solid phase change ink composition that includes selecting at least one naturally derived material, forming an ink vehicle, and adding a colorant, wherein at least one naturally derived material is a low melt material having an onset of melting of from about 45° C. to about 120° C., and a melt transition width of from about 3° C. to about 30° C. An ink jet device that includes the solid phase change ink composition described in the present disclosure is also provided.

Abstract: A reactive ink set including three mixtures of radically polymerizable monomers. A first mixture includes a peroxide, a second mixture includes a peroxide decomposition agent, and an optional third mixture that does not include a peroxide or a peroxide decomposition agent. The first mixture and the second mixture polymerize to form a solid ink on the substrate following jetting in the liquid state.

Abstract: An ink preferably used in piezoelectric ink jet devices includes an ink vehicle that includes at least one curable monomer, at least one polymerizable organic gelator, at least one initiator, at least one colorant and optionally at least one low molecular mass non-reactive organic gelator and/or at least one thermal solvent. The use of the curable gelator enables the ink to form a gel state having a viscosity of at least 102.5 cps at very low temperatures of about 30° C. to about 50° C. The ink may thus be jetted at low temperatures of about 50° C. to about 90° C. The ink is heated to a first temperature above the gel point of the ink, jetted onto a surface maintained at a second temperature at which the ink forms a gel state, and when on the image receiving substrate, is exposed to radiation energy to polymerize the polymerizable components of the ink.

Abstract: A nanoscale pigment particle composition includes a quinacridone pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.

Abstract: Disclosed is an ink jet printing device including an ink jet print head and a print region surface toward which ink is jetted from the ink jet print head, wherein a height distance between the ink jet print head and the print region surface is adjustable. The ink jet printing device is thus a dual printing device capable of printing both regular height and raised height images such as Braille.

Abstract: Phase change ink comprising an ink vehicle that includes at least one amphiphilic molecule. The amphiphilic molecule is capable of co-crystallizing into the at least one wax monomer to form functionalized spherulites which are then capable of hydrogen bonding to other similarly functionalized spherulites to form a bonded network of spherulites. Increased adhesive and cohesive strength of the ink on paper can result, thereby generating a robust image.

Abstract: Ink vehicles having improved gellant solubility and ink compositions including such ink vehicles are provided. Exemplary ink vehicles include first and second co-monomers, and a gellant that includes that includes a curable epoxy-polyamide composite gellant; in which the first and second co-monomers are radiation curable are different from each other. Additional exemplary ink vehicles include at least two chemically distinct gellants. The chemically distinct gellant materials include a first gellant that includes a curable epoxy-polyamide composite gellant, and a second gellant that includes an amide gellant. Methods for making and using these ink vehicles and ink compositions are also provided.

Abstract: Disclosed is a method of embedding machine readable information on a substrate, including converting the information to machine readable code format and writing the machine readable code format on the substrate with at least one fluorescent marking material. Also disclosed is a system for embedding and recovering machine readable information on a substrate, including an image forming device containing at least one fluorescent marking material, wherein the image forming device receives data representative of the machine readable information, and forms an image corresponding to the data in a machine readable code format with the at least one fluorescent marking material on an image receiving substrate, and a document reading device including a radiation emitting unit that emits radiation effecting fluorescence of the at least one fluorescent marking material, and a reader that detects the data in the image on the image receiving substrate while the at least one fluorescent marking material is fluorescing.

Abstract: Phase change ink comprising an ink vehicle that includes at least one amphiphilic molecule. The amphiphilic molecule is capable of co-crystallizing into the at least one wax monomer to form functionalized spherulites which are then capable of hydrogen bonding to other similarly functionalized spherulites to form a bonded network of spherulites. Increased adhesive and cohesive strength of the ink on paper can result, thereby generating a robust image.

Abstract: Disclosed is a phase change ink containing a fluorescent colorant that upon exposure to activating energy fluoresces such that an image that was not visible prior to exposure to the activating energy becomes visible. Also disclosed are an ink jet system and a process for authenticating a color document using the disclosed phase change ink.

Abstract: Disclosed is a radiation curable ink containing a fluorescent material that upon exposure to activating energy fluoresces such that an image that was not visible prior to exposure to the activating energy becomes visible. Also disclosed are an ink jet system and a process printing the disclosed radiation curable ink.

Abstract: Articles and methods for making capsules that include a cap of electrophoretic material suspended in a dielectric fluid are disclosed. The cap of electrophoretic material and dielectric fluid are encapsulated in a shell that forms the capsule. The cap may be moved to a viewable portion of an inner surface of the capsule shell, the cap proximate to the inner surface, when an electric field from of a pair of separated electrodes translates the cap of electrophoretic material in the capsule.

Abstract: Disclosed is a machine readable code of a set of distinguishable symbols including at least a first symbol for encoding zeroes and a second symbol for encoding ones, wherein the first symbol exhibits a first color during machine reading and the second symbol exhibits a second color during machine reading, wherein the first color and the second color are detectably different under machine reading conditions.