Ceramic inkjet ink for red decoration

Patent metadata

Field	Value
Publication number	US-2016017161-A1
Application number	US-201414333464-A
Country	US
Kind code	A1
Filing date	Jul 16, 2014
Priority date	Jul 16, 2014
Publication date	Jan 21, 2016
Grant date	—

Abstract

Disclosed are compositions, such as inkjet inks, for jetting onto a ceramic substrate, and associated methods and systems. The compositions comprise a pigment compound that is configured to be jetted on a ceramic substrate during a ceramic inkjet process to impart a color effect to the ceramic substrate, and a reduction agent which, when exposed to a firing temperature, reacts with the pigment compound to cause a reduction reaction. In some embodiments, the pigment compound comprises jettable copper particles, which can cause the fired composition to take on a red or oxblood color, which can be used for decoration.

First claim

What is claimed is:

1 . A composition comprising:
a pigment compound configured to be jetted on a ceramic substrate during a ceramic inkjet process to impart a color effect to the ceramic substrate; and a reduction agent which, when exposed to a firing temperature, reacts with the pigment compound to cause a reduction reaction.

2 . The composition of claim 1 , wherein the pigment compound comprises copper.

3 . The composition of claim 2 , wherein the copper comprises particles having a particle size of less than 1 micron.

4 . The composition of claim 2 , wherein the copper comprises any of CuO, CuCO 3 , or CuS0 4 .

5 . The composition of claim 1 , wherein the reduction agent comprises any of Si0, SiC, SiN, or BN.

6 . The composition of claim 1 , wherein the reduction reaction results in the composition taking on a color.

7 . The composition of claim 6 , wherein the color extends a characteristic color gamut for the composition.

8 . The composition of claim 1 , wherein the reduction reaction results in the composition taking on a red color having a characteristic wavelength of 620-740 nm upon firing.

9 . The composition of claim 1 , wherein the reduction reaction results in the composition taking on any of a violet, burgundy, or oxblood color having a characteristic wavelength of 380-440 nm upon firing.

10 . The composition of claim 1 , wherein the pigment compound is configured to be jetted onto the ceramic substrate, and wherein the reduction agent is configured to be jetted onto the pigment compound.

11 . The composition of claim 1 , wherein the reduction agent is configured to be jetted onto the ceramic substrate, and wherein the pigment compound is configured to be jetted onto the jetted reduction agent.

12 . The composition of claim 1 , wherein the pigment compound and the reduction agent are configured to be jetted concurrently onto the ceramic substrate.

13 . The composition of claim 1 , further comprising a carrier.

14 . The composition of claim 1 , further comprising any of a pigment, a dye, or a colorant.

15 . The composition of claim 1 , wherein the firing temperature has a range of 1050 degrees C. to 1300 degrees C.

16 . A method comprising:
jetting a composition onto a ceramic substrate, wherein the composition includes a pigment and a reduction agent; and causing a color effect to be produced on the ceramic substrate by heating the composition to a temperature at which the reduction agent causes a reduction reaction with the pigment.

17 . The method of claim 16 , wherein the temperature has a range of 1050 degrees C. to 1300 degrees C.

18 . The method of claim 16 , wherein the pigment comprises copper.

19 . The method of claim 17 , wherein the copper comprises any of CuO, CuCO 3 , or CuS0 4 .

20 . The method of claim 16 , wherein the pigment comprises particles having a particle size of less than 1 micron.

21 . The method of claim 16 , wherein the reduction agent comprises any of Si0, SiC, SiN, or BN.

22 . The method of claim 16 , wherein the jetting comprises:
jetting the pigment onto the ceramic substrate; and jetting the reduction agent onto the jetted pigment.

23 . The method of claim 16 , wherein the jetting comprises:
jetting the reduction agent onto the ceramic substrate; and jetting the pigment onto the reduction agent.

24 . The method of claim 16 , wherein the jetting comprises:
concurrently jetting the pigment and the reduction agent onto the ceramic substrate.

25 . A printing system, comprising:
a print head assembly to jet a composition onto a ceramic substrate, wherein the inkjet ink includes a pigment compound configured to impart a color effect to the ceramic substrate, and a reduction agent which, when exposed to a firing temperature, reacts with the pigment compound to cause a reduction reaction.

26 . The printing system of claim 25 , wherein the printing assembly comprises a first print head for jetting the pigment compound, and a second print head for jetting the reduction agent.

27 . The printing system of claim 25 , wherein the print head assembly is configured to be concurrently jet the pigment compound and the reduction agent onto the ceramic substrate.

28 . A method for manufacturing a composition for jetting onto a ceramic substrate, the method comprising:
adding one of a jettable pigment compound or a jettable reduction agent to a liquid carrier; and adding the other of the jettable pigment compound or a the jettable reduction agent to the liquid carrier; wherein the jettable reduction agent is configured to react with the jettable pigment compound, when exposed to a firing temperature, to cause a reduction reaction and impart a color effect to the ceramic substrate.

29 . The method of claim 28 , wherein the jettable pigment compound comprises copper particles.

30 . The method of claim 28 , wherein the jettable pigment compound comprises particles having a size of less than 1 micron.

Assignees

• Electronics For Imaging Inc

Inventors

• Zavada Mark
• Weber David
• Fage Louis
• Tennis Matthew

Classifications

• C09D11/322

  Pigment inks · CPC title

• C09D11/38 Primary

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title