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US 9,315,681 B2Granted
High viscosity heat sensitive ink printing process
OwnerMing Xuinventor
Life of this patent
Estimating the term…
Abstract
A high viscosity aqueous inkjet ink that is useful in ink jet printers. The ink comprises heat activated colorant solids that are not heat activated during the printing process, and are printed onto a substrate in the form of an image that can be transferred onto a subsequent or final substrate by applying heat and intimate contact between the two substrates. The ink can also be heat activated onto the substrate without further transfer by applying heat at the temperature that is suitable for the activation of the colorant.
Claims9
An ink jet printer ink having heat activated colorant solids, comprising:
- water;
- heat activated colorant solids;
- and
- a viscosity control agent comprising not less than 15%, or greater than 60%, by weight of the liquid ink, wherein the liquid ink has a viscosity of not less than 6.0 centipoise, wherein the heat activated colorant solids are sparingly soluble in the viscosity control agent, and wherein not less than 95% of particles of heat activated colorant solids have a diameter of 0.05 microns or greater.
1 more element
Dependencies are inferred from the claim text.