Inkjet printing of wood colours
An inkjet ink set consisting of a black inkjet ink, a cyan inkjet ink and two inkjet inks A and B, optionally complemented by a white ink and/or a colourless ink, wherein the inkjet ink A has a hue angle H* between 70 and 85 and a chroma C* between 30 and 80; the inkjet ink B has a hue angle H* between 20 and 40 and a chroma C* between 30 and 80; and the CIE L* a* b* coordinates were determined on polyethylene coated white paper for a 2° observer under a D50 light source.
1. An inkjet ink set consisting of:
a black inkjet ink, a cyan inkjet ink, and two inkjet inks A and B, optionally complemented by a white inkjet ink and/or a colourless inkjet ink; wherein
the inkjet ink A has a hue angle H* between 70 and 85 and a chroma C* between 30 and 80;
the inkjet ink B has a hue angle H* between 20 and 40 and a chroma C* between 30 and 80; and
CIE L* a* b* coordinates are determined on a polyethylene coated white paper for a 2° observer under a D50 light source and used to calculate the hue angle H* and the chroma C* of the inkjet ink A and the inkjet ink B.
2. The inkjet ink set according to claim 1 , wherein at least one of the two inkjet inks A and B includes a mixture of at least two pigments.
3. The inkjet ink set according to claim 2 , wherein the inkjet ink A includes a mixture of a yellow pigment and an orange pigment.
4. The inkjet ink set according to claim 3 , wherein the inkjet ink A includes a mixture of C.I. Pigment Orange 71 and C.I. Pigment Yellow 139.
5. The inkjet ink set according to claim 1 , wherein the inkjet ink B includes a mixture of a red pigment and an orange pigment.
6. The inkjet ink set according to claim 5 , wherein the inkjet ink B includes a mixture of C.I. Pigment Red 254, C.I. Pigment Red 122, and C.I. Pigment Orange 71.
7. The inkjet ink set according to claim 6 , wherein the inkjet ink B further includes C.I. Pigment Violet 23 and/or C.I. Pigment Blue 61.
8. The inkjet ink set according to claim 1 , including the white inkjet ink and/or the colourless inkjet ink.
9. The inkjet ink set according to claim 1 , wherein a pigment concentration in each of the inkjet inks A and B is less than 1.0 wt % based on a total weight of the respective inkjet ink.
10. The inkjet ink set according to claim 1 , wherein each of the black inkjet ink, the cyan inkjet ink, the two inkjet inks (A) and (B), and the optional white inkjet ink and/or colourless inkjet ink is a radiation curable ink.
11. An inkjet printed colour pattern comprising:
a substrate; and
the inkjet ink set as defined in claim 1 printed on the substrate.
12. A decorative panel comprising:
a substrate; and
the inkjet printed colour pattern according to claim 11 printed on the substrate; wherein
the decorative panel is one of flooring, a kitchen panel, furniture, and a wall panel.
13. A method of inkjet printing including the step of:
inkjet printing a colour pattern on a substrate with the black inkjet ink, the cyan inkjet ink, and the two inkjet inks A and B of the inkjet ink set as defined in claim 1 .
14. A method of manufacturing a decorative panel comprising:
inkjet printing a colour pattern on a substrate with the black inkjet ink, the cyan inkjet ink, and the two inkjet inks A and B of the inkjet ink set as defined in claim 1 .