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US 9,751,326 B2Granted
Hyperbranched ink compositions for controlled dimensional change and low energy curing
AssigneeXerox Corporation
InventorsCarolyn Moorlag, C. Geoffrey Allen, Marcel P. Breton, Mihaela Maria Birau
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Abstract
Disclosed herein are ink compositions including at least one hyperbranched oligomer present in an amount ranging from about 3% to about 20% and having a functionality ranging from about 6 to about 40; at least one pigment present in an amount of at least about 10%; and at least one photoinitiator present in an amount ranging from 5% to 10%. Further provided herein are methods of printing using a variable data digital lithographic printing device.
Claims14
An ink composition comprising:
- at least one hyperbranched oligomer present in an amount ranging from about 3 wt % to about 20 wt % and having a functionality ranging from about 10 to about 20;
- at least one pigment present in an amount of at least 10%;
- at least one photoinitiator present in an amount ranging from about 5% to about 10%;
- and
- at least one rheology modifier chosen from organoclays, attapulgite clays and bentonite clays,
- wherein the ink composition has a viscosity ranging from about 5,000 cP to about 300,000 cP at 25° C. and a shear rate of 5 sec−1, and
- wherein the ink is a digital offset ink.
4 more elements
An ink composition comprising:
- at least one hyperbranched oligomer present in an amount ranging from about 3 wt % to about 20 wt % and having a functionality ranging from about 10 to about 20;
- at least one pigment present in an amount of at least 10%;
- at least one photoinitiator present in an amount ranging from about 5% to about 10%;
- and
- at least one rheology modifier chosen from organoclays, attapulgite clays, bentonite clays, and modified hydrogenated castor oils,
- wherein the ink composition has a viscosity ranging from about 5,000 cP to about 300,000 cP at 25° C. and a shear rate of 5 sec−1, and
- wherein the ink is a digital offset ink.
4 more elements
Dependencies are inferred from the claim text.