Abstract: The present disclosure provides for the process for preparing a solid inkjet ink using a pigment flush. One process includes applying a first mixing step to a pigment and a flushing agent to flush the pigment from am aqueous phase to a non-aqueous phase to form a pigment dispersion, adding at least one other ink ingredient, and incorporating the other ink ingredient in the pigment dispersion by applying a second mixing step to form a solid inkjet ink. Another process disclosed includes adding at least one ink ingredient directly to a pigment dispersion and mixing by applying a high shear mixer.

Abstract: Curable monomer that is liquid at 25° C., curable wax and colorant together form a radiation curable ink. This ink may be used to form images by providing the radiation curable ink at a first temperature; applying the radiation curable ink to the substrate to form an image, the substrate being at a second temperature, which is below the first temperature; and exposing the radiation curable ink to radiation to cure the ink.

Abstract: Nanoscale pigment particles of phthalocyanine pigments are prepared by providing a unsubstituted phthalocyanine chromogen material and a substituted phthalocyanine chromogen material, reacting the unsubstituted phthalocyanine chromogen material and the substituted phthalocyanine chromogen material to form a mixture of unsubstituted phthalocyanine dye molecules and substituted phthalocyanine dye molecules, and causing the substituted phthalocyanine dye molecules to non-covalently associate with the unsubstituted phthalocyanine dye molecules, so as to limit an extent of particle growth and aggregation and result in nanoscale pigment particles.

Abstract: A process for preparing nanoscale azo pigment particles includes providing an organic pigment precursor that contains at least one functional moiety, providing a sterically bulky stabilizer compound that contains at least one functional group, and carrying out a chemical reaction to form a pigment composition in a microreactor or micromixer, whereby the functional moiety found on the pigment precursor is incorporated within the pigment and non-covalently associated with the functional group of the stabilizer, so as to allow the formation of nanoscale-sized pigment particles and the production of such in a microreactor under laminar or turbulent flow conditions without clogging.

Abstract: Curable monomer that is liquid at 25° C., curable wax and colorant together from a radiation curable ink. This ink may be used to form images by providing the radiation curable ink at a first temperature; applying the radiation curable ink to the substrate to form an image, the substrate being at a second temperature, which is below the first temperature; and exposing the radiation curable ink to radiation to cure the ink.

Abstract: A variety of UV curable phase change inks are disclosed. The inks possess the characteristic the gloss of printed areas closely matches the gloss of unprinted areas of the substrate. On plain papers the printed and unprinted gloss values are within 5 ggu when measured at 60°. On coated papers, the printed and unprinted gloss values are within 25 ggu when measured at 60°. Although not limited by any theory, it is speculated that the gel rheology of inks of the disclosure conforms well with the paper substrate, providing a rougher low gloss surface on plain paper and a smoother high gloss surface on coated paper.

Abstract: A process for preparing coated nanoscale quinacridone pigment particles, includes: mixing a quinacridone pigment precursor or crude quinacridone pigment with a first solution including an acid to form nanoscale quinacridone pigment particles; adding the first solution and formed nanoscale quinacridone pigment particles into a second solution including deionized water to form a third solution and to precipitate the nanoscale quinacridone pigment particles; and washing the precipitated nanoscale quinacridone pigment particles in a fourth solution including a surface additive compound, whereby the surface additive compound coats the nanoscale quinacridone pigment particles; wherein the surface additive compound is a rosin compound.

Abstract: A process for preparing coated nanoscale quinacridone pigment particles, includes providing a first solution containing a surface additive compound in an acid; adding a quinacridone pigment precursor or crude quinacridone pigment into the first solution and causing the surface additive compound to coat formed nanoscale quinacridone pigment particles; and adding the first solution and coated nanoscale quinacridone pigment particles into a second solution containing deionized water to form a third solution and to precipitate the coated nanoscale quinacridone pigment particles; wherein the surface additive compound is a rosin compound.

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 hand-held photochromic marking implement including photochromic colorants and a solid phase colorant carrier which can be used in direct-to-media marking and a method of forming same.

Abstract: The phase change ink a viscosity of from about 4 mPa-s to about 50 mPa-s at a first temperature and has a viscosity of from 104 mPa-s to about 109 mPa-s at a second lower temperature. The second temperature may be below the first temperature by at least 10° C. but by no more than 50° C. The first temperature may be from about 60° C. to about 110° C. and the second temperature may be from about 20° C. to about 70° C. A curve of log10 viscosity of the phase change ink plotted against temperature in degrees Celsius may have a slope having an absolute value less than 0.02 at the first temperature and have a slope having an absolute value greater than 0.08 for at least a region second temperatures.

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 mono-azo laked pigment includes a nono-azo dye molecule laked with a divalent metal cation; 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. Non-aqueous dispersion compositions, such as ink compositions, contain a polymeric dispersant, an organic liquid, and the nanoscale pigment particle composition.

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 on the pigment associates non-covalently with the functional group of the stabilizer; and the nanoscale pigment particles have an average particle size of from about 10 nm to about 500 nm and have tunable coloristic properties that depend on both particle composition and average particle size.

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 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 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 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 on the pigment associates non-covalently with the functional group of the stabilizer; and the nanoscale pigment particles have an average particle size of from about 10 nm to about 500 nm and have tunable coloristic properties that depend on both particle composition and average particle size.

Abstract: A nano scale 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 mono-azo laked pigment includes a nono-azo dye molecule laked with a divalent metal cation; 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. Non-aqueous dispersion compositions, such as ink compositions, contain a polymeric dispersant, an organic liquid, and the nanoscale pigment particle composition.

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.