Process black ink compositions and uses thereof

摘要

The present disclosure is directed to a process black ink composition for digital offset printing including a cyan colorant including a cyan pigment, a magenta colorant including a magenta pigment and a yellow colorant including a yellow pigment, wherein the process black ink composition includes a total amount of pigment of at least about 15 wt %, a photo-initiator, a dispersant, and a curable ink vehicle component including at least one component selected from a curable monomer or a curable oligomer wherein the process black ink composition comprises a ratio of the cyan colorant to the yellow colorant of 0.70-0.80:1.0 and a ratio of the magenta colorant to the yellow colorant of 0.90-0.80:1.0, and wherein the process black ink composition does not comprise carbon black. Methods of preparing the present process black ink composition and using the process black ink composition are also provided.

主权项

1. A process black ink composition for digital offset printing comprising:
a cyan colorant comprising a cyan pigment, a magenta colorant comprising a magenta pigment and a yellow colorant comprising a yellow pigment, wherein the process black ink composition comprises a total amount of pigment of at least about 15 wt %, a photo-initiator, a dispersant, and a curable ink vehicle component comprising at least one component selected from the group consisting of a curable monomer and a curable oligomer; wherein the process black ink composition comprises a ratio of the cyan colorant to the yellow colorant of 0.70-0.80:1.0 and a ratio of the magenta colorant to the yellow colorant of 0.90-0.80:1.0, wherein the process black ink composition does not comprise carbon black, and wherein the process black ink further comprises a filler.