Ink composition for inkjet printing
AssigneeDomino UK Limited
InventorAndrew Kyriacou
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Abstract
An improved inkjet ink composition is disclosed comprising a cellulosic polymer for forming a porous network structure; a blend of a nonsolvent for the cellulosic polymer and a solvent for the cellulosic polymer; the solvent being more volatile than the nonsolvent; a film forming binder with high polarity, the film forming binder being separately soluble in both the nonsolvent and the blend. Evaporation of the solvent blend leaves behind a structure comprising a first solid phase of cellulosic polymer and a second solid phase of binder, which exhibits good opacity and improved abrasion resistance.
Claims17
An inkjet ink composition comprising:
- a cellulosic polymer for forming a porous network structure;
- a blend of a nonsolvent for the cellulosic polymer and a solvent for the cellulosic polymer;
- the solvent being more volatile than the nonsolvent;
- and
- a film forming binder that is substantially insoluble in acetone alone, the film forming binder being separately soluble in both the nonsolvent and the blend.
A printed deposit comprising a light scattering layer having a porous network structure comprised of a cellulosic polymer and a binder layer, the binder layer lying between the light scattering layer and a substrate on which the printed deposit lies to bind the light scattering layer to the substrate.
An inkjet ink composition comprising:
- a cellulosic polymer;
- a nonsolvent for the cellulosic polymer;
- a solvent for the cellulosic polymer, the solvent being more volatile than the nonsolvent;
- and
- a film forming binder that is separately soluble in both the nonsolvent and the solvent blend of solvent and nonsolvent;
- and wherein the cellulosic polymer and film forming binder are incompatible such that when both the solvent and nonsolvent evaporate, the cellulosic polymer and film forming binder form a heterogeneous structure that exhibits two glass transition temperatures.
Dependencies are inferred from the claim text.