WATER-DILUTABLE INKS AND WATER-DILUTED RADIATION CURABLE INKS USEFUL FOR INK-BASED DIGITAL PRINTING

摘要

An ink composition useful for digital offset printing applications includes a colorant and a radiation-curable water-dilutable compound. A process for variable data lithographic printing includes applying a dampening fluid to an imaging member surface; forming a latent image by evaporating the dampening fluid from selective locations on the imaging member surface to form hydrophobic non-image areas and hydrophilic image areas; developing the latent image by applying an ink composition comprising an ink component to the hydrophilic image areas, the ink composition comprising a radiation-curable water-dilutable compound, a colorant component, and optionally water; and transferring the developed latent image to a receiving substrate, wherein the ink transfer efficiency is 90% or higher.

主权项

1. An ink composition for variable data lithographic printing, comprising:
a radiation-curable water-dilutable compound, and a colorant component.