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US 10,591,838 B2Granted
Electrostatic ink compositions
AssigneeHP Indigo B.V.
InventorsOlga Kagan, Danny Feldman, Rada Nuchimov, Yaron Grinwald, Shiran Zabar, Gleb Romantcov
Life of this patent
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Abstract
Disclosed herein is an electrostatic ink composition. The composition may comprise a carrier liquid, which has suspended therein: thermochromic pigment particles having a layer of thermoplastic resin thereon. Method for forming electrostatic ink composition and a substrate having the electrostatic ink composition printed thereon are also disclosed herein.
Claims17
An electrostatic ink composition comprising:
- a carrier liquid, which has suspended therein:
- thermochromic microcapsules having a layer of thermoplastic resin thereon, the thermochromic microcapsules including a polymeric shell encapsulating a color former, a color developer, and a solvent encapsulated within the polymeric shell, wherein the polymeric shell has a lower melt flow rate than a polymer of the thermoplastic resin.
Dependencies are inferred from the claim text.