Patent ID: 8263683

Claim:
An aqueous inkjet ink composition which comprises a polymeric compound comprising discrete particles responsive to an external stimulus, and a functional material selected from the group consisting of a colorant, magnetic particles, conducting or semi-conducting particles, and quantum dots, the composition having a first rheological state and a different second rheological state in response to a stimulated change in conditions, the first rheological state being associated with a first lower viscosity of the composition, wherein the discrete particles have a first lower volume, enabling the composition to pass through an inkjet printhead orifice and the second rheological state being associated with a second higher viscosity of the composition, wherein the discrete particles have a second higher volume, enabling immobilization of droplets of the composition on a substrate therefore, the discrete particles having an equivalent spherical diameter of 0.5 μm or less in the first lower volume, and the discrete particles being crosslinked to maintain particulate shape in both the first and second rheological states, and wherein the functional material is incorporated into the discrete particles.