Curable inks comprising 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 coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least the coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink, a gellant. The inks may also include optional colorants and one or more optional additives. These curable gel UV ink compositions can be used for ink jet printing in a variety of applications.
Claims20
An ink comprising:
- a curable ink carrier comprising
- a monomer,
- a photoinitiator,
- an optional curable oligomer, and
- one or more optional additives;
- coated magnetic nanoparticles, wherein the coated magnetic nanoparticles are comprised of a magnetic metal core and a protective coating disposed on the magnetic metal core, wherein the protective coating is selected from the group consisting of carbon materials, polymeric materials, surfactants and mixtures thereof, and 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 magnetic nanoparticles, wherein the coated magnetic nanoparticles are comprised of a magnetic metal core and a protective coating disposed on the magnetic metal core, wherein the protective coating is selected from the group consisting of carbon materials, polymeric materials, surfactants and mixtures thereof, and 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 magnetic nanoparticles, wherein the coated magnetic nanoparticles are comprised of a magnetic metal core and a protective coating disposed on the magnetic metal core, wherein the protective coating is selected from the group consisting of carbon materials, polymeric materials, surfactants and mixtures thereof, and 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 applications.
Dependencies are inferred from the claim text.