Dye discharge inkjet ink compositions
AssigneeKornit Digital Ltd.
InventorJacob Mozel
Life of this patent
Estimating the term…
Abstract
A dye discharge composition exhibiting extended shelf life and/or pot life and high suitability for inkjet printing on dyed substrates, is disclosed. The composition comprises a reducing agent such as, for example, a sulfur-based reducing agent, and a chelating agent, such as a sodium salt of a polyamino carboxylic acid chelating agent. Use of the dye discharge composition in combination with a translucent colored composition and an optional opaque underbase composition, for forming an image on a dyed substrate is also disclosed. Processes for inkjet printing of an image on a dyed surface using the dye discharge composition, kits for use in such processes or an ink formulation containing same are also disclosed.
Claims27
A dye discharge composition comprising a reducing agent, a chelating agent and a first carrier, the composition is forming a part of an ink formulation, said ink formulation further comprises a translucent colored composition, said translucent colored composition comprising a colorant, a dispersing agent and a second carrier, the composition is for forming a dye discharged area on a surface of a dyed substrate, wherein said reducing agent is a sulfur-based reducing agent, the composition is having a pH that ranges from 3 to 6.5.
Dependencies are inferred from the claim text.