Back to results
US 10,767,063 B2Granted
Aqueous inkjet inks
AssigneeAgfa-Gevaert
InventorsJohan Loccufier, Fabienne Goethals, Hubertus Van Aert, Dirk Kokkelenberg
Life of this patent
Estimating the term…
Abstract
An aqueous inkjet ink for forming a colour upon heat treatment includes a) an immobilized leuco dye; b) a colour developing agent or colour developing agent precursor; and c) optionally an opthothermal converting agent; wherein the leuco dye is immobilized by being covalently bonded to polymeric particles or by being included in the core of capsules composed of a polymeric shell surrounding a core.
Claims13
An aqueous inkjet ink comprising:
- an immobilized leuco dye;
- a color developing agent or a color developing agent precursor;
- and
- an optothermal converting agent;
- wherein
- the leuco dye is immobilized by being covalently bonded to polymeric particles or by being included in a core of capsules including a polymeric shell surrounding the core;
- the immobilized leuco dye is physically separated from the color developing agent or the color developing agent precursor by the polymeric shell of the capsule;
- and
- the aqueous inkjet ink has a viscosity less than 50 mPa·s at 25° C. and a shear rate of 90 s−1.
6 more elements
Dependencies are inferred from the claim text.