Pigmented cyan inkjet ink
View Patent ↗The present disclosure pertains to a cyan pigmented inkjet ink and uses thereof in inkjet ink sets and inkjet printing. More particularly, the present disclosure pertains to an ink that is cyan in color and comprises a mixed pigment colorant.
1. A cyan ink jet ink comprising a pigment colorant and an aqueous vehicle, characterized in that said pigment colorant comprises a mixture of Pigment Blue 15 and Pigment Green 7.
2. An inkjet printer equipped with an ink as set forth in claim 1 .
3. The cyan inkjet ink of claim 1 , characterized in that the total amount of pigment colorant present is at least 1% by weight, based on the total weight of the ink.
4. An inkjet printer equipped with an ink as set forth in claim 3 .
5. The cyan inkjet ink of claim 1 , characterized in that the weight ratio of said Pigment Blue 15 to said Pigment Green 7 is from 10:1 to 1:4.
6. An inkjet printer equipped with an ink as set forth in claim 5 .
7. The cyan inkjet ink of claim 5 , characterized in that the weight ratio of said Pigment Blue 15 to Pigment Green 7 is from 5:1 to 1:1.
8. An inkjet printer equipped with an ink as set forth in claim 7 .
9. The cyan inkjet ink of claim 1 , having a surface tension in the range of 20 dyne/cm to 70 dyne/cm at 25° C., and a viscosity of 30 cP or less at 25° C.
10. An inkjet printer equipped with an ink as set forth in claim 9 .
11. An inkjet ink set comprising a plurality of differently colored inkjet inks, characterized in that at least one of the inks is a cyan inkjet ink according to claim 1 .
12. An inkjet printer equipped with an ink set as set forth in claim 11 .
13. The inkjet ink set of claim 11 , further comprising a magenta pigmented ink and a yellow pigmented ink.
14. An inkjet printer equipped with an ink set as set forth in claim 13 .
15. The inkjet ink set of claim 13 , further comprising a black ink.
16. An inkjet printer equipped with an ink set as set forth in claim 15 .