Curable inks comprising surfactant-coated magnetic nanoparticles
AssigneeXerox Corporation
InventorsGabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
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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.
Claims19
An ink comprising:
- a curable ink carrier comprising
- a monomer,
- a photoinitiator,
- an optional curable oligomer, and
- one or more optional additives;
- coated ferromagnetic nanoparticles, wherein the coated ferromagnetic nanoparticles are comprised of a ferromagnetic metal core and a protective coating disposed on the magnetic metal core, wherein the protective coating comprises one or more surfactants, and further wherein the protective coating has a thickness of from about 0.2 nm to about 100 nm;
- and
- an optional colorant.
An ink comprising:
- a curable ink carrier comprising
- a monomer,
- a photoinitiator,
- an optional curable oligomer, and
- one or more optional additives;
- coated ferromagnetic nanoparticles, wherein the coated ferromagnetic nanoparticles are comprised of a ferromagnetic metal core and a protective coating disposed on the ferromagnetic metal core, wherein the protective coating comprises one or more surfactants, and further wherein the protective coating has a thickness of from about 0.2 nm to about 100 nm;
- a gellant;
- and
- an optional colorant.
An ink comprising:
- a curable ink carrier comprising
- a monomer,
- a photoinitiator,
- an optional curable oligomer, and
- one or more optional additives;
- coated ferromagnetic nanoparticles, wherein the coated ferromagnetic nanoparticles are comprised of a ferromagnetic metal core and a protective coating disposed on the magnetic metal core, wherein the protective coating comprises one or more surfactants, and further wherein the protective coating has a thickness of from about 0.2 nm to about 100 nm;
- and
- an optional colorant, wherein the ink is used for Magnetic Ink Character Recognition (MICR) applications.
Dependencies are inferred from the claim text.