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US 11,112,717 B2Granted
Electrostatic ink compositions and scratch-off structures
AssigneeHP Indigo B.V.
InventorsInna Tzomik, Albert Teishev
Life of this patent
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Abstract
Disclosed herein is an electrostatic ink composition comprising a component selected from a fatty acid ester having a plurality of hydroxyl substituents and a fatty acid amide having a plurality of hydroxyl substituents. Also described herein are scratch-off structures and methods for producing them.
Claims13
An electrostatic ink composition comprising a a fatty acid ester having a plurality of hydroxyl substituents constituting from 10 wt % to 30 wt % solids of the electrostatic ink composition.
Dependencies are inferred from the claim text.