Xerox Corporation

Maria Birau

C Geoffrey Allen

Peter Gordon Odell

Gabriel Iftime

Daryl Walter Vanbesien

Jordan H Wosnick

Yiliang Wu

Valerie M Farrugia

Ping Liu

Sandra J Gardner

Adela Goredema

Carol A Jennings

Beng S Ong

Peter Michael Kazmaier

Rina Carlini

Paul Farrell Smith

Biby Esther Abraham

Christopher A Wagner

Caroline Melanie Turek

Karl W Dawson

Maxine Haberl

Marcel Philippe Breton

Richard P N Veregin

Karen Ann Moffat

Yu Qi

Edul N Dalal

Jeffrey H Banning

James Daniel Mayo

Raymond W Wong

Richard P Veregin

Roger E Gaynor

Beng Ong

Sheau V Kao

Salma Falah Toosi

Aaron Strong

Peng Liu

Geoffrey C Allen

The present disclosure provides a modified carmine which can comprise polymers, such as, polyesters, or conjugating molecules, such as, polycarboxylic acids.

Carmine colorants

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

Phase change ink with compostable wax

A process includes forming an emulsion comprising a monomer and a colorant, the colorant further including an anionic functional group and a lipophilic counter ion, and polymerizing the monomer to form a latex, the latex includes polymer nanoparticles having the colorant dispersed therein.

Latex comprising colorant and methods of making the same

Disclosed is a fluorescent ink containing more than one fluorescent materials that upon exposure to different excitation wavelengths emits different color. Also disclosed is a process of authentication using said fluorescent ink.

Fluorescent security phase change ink

Disclosed is a phase change ink comprising (i) an ink carrier; (ii) a quinacridone pigment; (iii) a synergist of the formula or mixtures thereof, wherein R, R, R, R, R, R, R, R, R, R, and x are as defined herein; and (iv) a pigment dispersant; said phase change ink being a solid at about 25&#xb0; C.

Phase change inks containing quinacridone pigments and synergists

A light-cyan solid ink including an ink vehicle and a colorant. The colorant includes a cyan colorant, a hue-adjusting colorant that absorbs light having a wavelength of from about 500 to about 600 nm, and an optional shade-adjusting colorant that absorbs light having a wavelength of from about 400 to about 500 nm.

Ink compositions

A nonpolar or solid (or phase change) ink composition that includes a carrier and at least one nanoscale fluorescent pigment particle composition and/or a fluorescent organic nanoparticle composition. The fluorescent organic nanoparticle composition includes a polymeric matrix obtained by modified EA latex process and/or emulsion polymerization and one or more fluorescent dyes and the nanoscale fluorescent pigment particle composition includes pigment molecules with 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.

Fluorescent solid ink made with fluorescent nanoparticles

A method for making toners to include at least one nanoscale fluorescent pigment particle composition and/or a fluorescent organic nanoparticle composition. The particles are incorporated into emulsion of toner and used in making toner via emulsion aggregation. Such toners may have a core and/or a shell and the clay composites may be included within the core, the shell or both. The fluorescent organic nanoparticle composition includes a polymeric matrix obtained by modified EA latex process and/or emulsion polymerization and one or more fluorescent dyes and the nanoscale fluorescent pigment particle composition includes pigment molecules with 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 pigment particles.

Toner containing fluorescent nanoparticles

A solid ink that includes an ink carrier and a resinous compound of the formulas or a salt thereof, wherein Gis &#x2014;XC(O)OR, &#x2014;XOC(O)R, or &#x2014;XOH; Gis R, R, &#x2014;C(O)R, &#x2014;C(O)XC(O)OR, or &#x2014;C(O)XOC(O)R; Ris an alkyl having from 10 to 80 carbon atoms; Ris an alkyl having from 2 to 40 carbon atoms; each Rand Ris independently hydrogen, alkyl, arylalkyl or alkylaryl; each Rand each Ris independently hydrogen or alkyl; Xand Xare both a straight or branched alkylene group; tis 1 to 20; tand tis independently 0 to 20; uis 1 to 30; uand uis independently 0 to 30; each Rand each Ris independently hydrogen, alkyl, or alkoxyl; each Rand each Ris independently hydrogen, alkyl, or alkoxyl; Ar is a substituted or unsubstituted aromatic moiety; p is 1 to 5; q is 1 to 12; Ais selected from the group consisting of Cl, Br, I, HSO, HSO, CHSO, NO, HCOO, CHCOO, HPO, SCN, ClO, SSO, PF, and SbCl; and J is alkyl, arylalkyl, or alkylaryl.

Tri-component resins for pigmented ink

A resinous compound of the formulas or a salt thereof, wherein Gis &#x2014;XC(O)OR, &#x2014;XOC(O)R, or &#x2014;XOH; Gis R, R, &#x2014;C(O)R, &#x2014;C(O)XC(O)OR, or &#x2014;C(O)XOC(O)R; Ris an alkyl having from 10 to 80 carbon atoms; Ris an alkyl having from 2 to 40 carbon atoms; each Rand Ris independently hydrogen, alkyl, arylalkyl or alkylaryl; each Rand each Ris independently hydrogen or alkyl; Xand Xare both a straight or branched alkylene group; t1 is 1 to 20; t2 and t3 is independently 0 to 20; u1 is 1 to 30; u2 and u3 is independently 0 to 30; each Rand each Ris independently hydrogen, alkyl, or alkoxyl; each Rand each Ris independently hydrogen, alkyl, or alkoxyl; Ar is a substituted or unsubstituted aromatic moiety; p is 1 to 5; q is 1 to 12; Ais selected from the group consisting of Cl, Br, I, HSO, HSO, CHSO, NO, HCOO, CHCOO, HPO, SCN, BF, ClO, SSO, PF, and SbCl; and J is alkyl, arylalkyl, or alkylaryl.

Synthesis of tri-component resins

A fluorescent particle includes a fluorescent pigment, such as a trans-dicarboxylic-indenofluorenone, and at least one stabilizing wax chemically attached to the fluorescent pigment. The stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group, where the amine group reacts with the carboxylic acid group to form an amide bond. A method for making fluorescent particles for use in toners by chemically attaching at least one stabilizing wax to a fluorescent pigment where the at least one stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group. A toner may include a resin and the fluorescent particle.

Fluorescent toner compositions and fluorescent pigments

A nanoscale pigment particle composition includes a fluorescent compound, such as a benzothioxanthene pigment, including at least one functional moiety, and a 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.

Fluorescent nanoscale particles

Radiation curable compositions, such as UV curable ink compositions, contain a polymeric dispersant, a curable material, that includes a carrier and at least one nanoscale fluorescent pigment particle and an optional non-fluorescent colorant. The fluorescent organic nanoparticle composition includes one or more fluorescent dyes dispersed in a polymeric matrix obtained by modified EA latex process or by emulsion polymerization. In a different embodiment, the nanoscale fluorescent pigment particle composition includes pigment molecules with 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 pigment particles.

Radiation curable ink containing fluorescent nanoparticles

A fluorescent solid ink, and a method for making such ink, including an ink vehicle and a fluorescent particle. The fluorescent particle includes a fluorescent pigment, such as a trans-dicarboxylic-indenofluorenone, and at least one stabilizing wax chemically attached to the fluorescent pigment. The stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group, where the amine group reacts with the carboxylic acid group to form an amide bond.

Fluorescent ink compositions and fluorescent particles

A small molecular thiophene compound consisting of a plurality of thiophene units, each thiophene unit being represented by structure (A)  there is excluded the simultaneous presence of the same or different Rat the 3-position of one thiophene unit and at the 3'-position of the other thiophene unit wherein Ris not part of a cyclic ring structure fused to the thiophene unit.

Growing community of inventors

Mississauga, Canada

Maria Birau