Ink compositions and methods of using the same are disclosed. An example ink composition includes an inkjet vehicle, from about 0.1 wt % to about 10 wt % of colorants, from about 0.01 wt % to about 10 wt % of anti-kogation agents, and from about 0.01 wt % to about 6 wt % of a water soluble component
Ink compositions and methods of using the same are disclosed. An example ink composition includes an inkjet vehicle, from about 0.1 wt % to about 10 wt % of colorants, from about 0.01 wt % to about 10 wt % of anti-kogation agents, and from about 0.01 wt % to about 6 wt % of a water soluble component represented by formula (I).
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1. An inkjet ink composition comprising: a. an inkjet vehicle,b. from about 0.1 to about 10 weight percentage of colorants,c. from about 0.01 to about 10 weight percentage of anti-kogation agents,d. and from about 0.2 to about 6 weight percentage of a water soluble component represented by formula (
1. An inkjet ink composition comprising: a. an inkjet vehicle,b. from about 0.1 to about 10 weight percentage of colorants,c. from about 0.01 to about 10 weight percentage of anti-kogation agents,d. and from about 0.2 to about 6 weight percentage of a water soluble component represented by formula (I): wherein R1 and R2 are independently CnH2n with n being form 1 to 5; wherein R3 is H or CnH2n+1 with n being form 1 to 4; wherein R4 is H, COOH or CnH2n+1 with n being form 1 to 4 and wherein R5 is H, COOH, OH, CnH2nCOOH, CnH2nOH or CnH2n+1 with n being form 1 to 4. 2. The inkjet ink according to claim 1 wherein, in the general formula (I), R1 and R2 are CnH2n with n being 1; wherein R3 is H; wherein R4 is COOH and wherein R5 is CnH2nCOOH with n being 2. 3. The inkjet ink according to claim 1 wherein, in the general formula (I), Rl and R2 are CnH2n with n being 1; R3 is H; R4 is H and R5 is CnH2nOH with n being 1. 4. The inkjet ink according to claim 1 wherein, in the general formula (I), R1 and R2 are CnH2n with n being 1; R3 is H; R4 is CnH2n+1 with n being 1 and R5 is CnH2nOH with n being 1. 5. The inkjet ink according to claim 1 wherein the water soluble component represented by formula (I), is present in an amount representing from about 0.10 to about 2 weight percentage by weight of the ink composition. 6. The inkjet ink according to claim 1 wherein the anti-kogation agent is a phosphate-containing surfactant. 7. The inkjet ink according to claim 1 wherein the anti-kogation agent is a phosphate ester surfactant. 8. The inkjet ink according to claim 1 wherein the anti-kogation agent is a phosphate ester of a fatty alcohol alkoxylate surfactant. 9. The inkjet ink according to claim 1 wherein the anti-kogation agent is an ethoxylated mono-oleyl phosphate ester surfactant. 10. The inkjet ink according to claim 1 wherein the anti-kogation agent is selected from the group consisting of oleth-3 phosphate, oleth-10 phosphate, oleth-5 phosphate, dioleyl phosphate, ppg-5-ceteth-10 phosphate, C9-C15 alkyl monophosphate, deceth-4 phosphate, and mixtures thereof. 11. The inkjet ink according to claim 1 wherein the anti-kogation agent has the formula (II) wherein n is from 0 to 15: 12. The inkjet ink of claim 1, wherein the anti-kogation agent is present in an amount representing from about 0.2 to about 3 weight percentage by weight of the ink composition. 13. The inkjet ink according to claim 1 wherein the colorant is a pigment. 14. The inkjet ink according to claim 1 wherein the water soluble component represented by formula (I) is present in an amount representing from about 0.20 to about 2 weight percentage by weight of the ink composition. 15. The inkjet ink according to claim 1, wherein the anti-kogation agent is oleth-3 phosphate present in an amount of about 1 weight percentage. 16. A method of inkjet printing over a prolonged period of time, comprising jetting an inkjet ink onto a media substrate, wherein said inkjet ink includes: a. an inkjet vehicle,b. from about 0.1 to about 10 weight percentage of colorants,c. from about 0.01 to about 10 weight percentage of anti-kogation agents, d. and from about 0.2 to about 6 weight percentage of a water soluble component represented by formula (I) : wherein R1 and R2 are independently CnH2n with n being form 1 to 5; wherein R3 is H or CnH2n+1 with n being form 1 to 4; wherein R4 is H, COOH or CnH2n+1 with n being form 1 to 4 and wherein R5 is H, COOH, OH, CnH2nCOOH, CnH2nOH or CnH2n+1 with n being form 1 to 4. 17. A method of inkjet printing over a prolonged period of time, comprising jetting an inkjet ink into a media substrate, wherein said inkjet ink includes: a. an inkjet vehicle,b. from about 0.1 to about 10 weight percentage of colorants,c. from about 0.01 to about 10 weight percentage of anti-kogation agents having the formula (II) wherein n is from 0 to 15: d. and from about 0.2 to about 6 weight percentage of a water soluble component represented by formula (I): wherein R1 and R2 are independently CnH2n with n being form 1 to 5; wherein R3 is H; wherein R4 is CnH2n+1 with n being 1 and R5 is CnH2nOH with n being 1.
Sader, Richard A; Bruinsma, Paul J.; Chatterjee, Amiya K; Doumaux, Howard A; Lassar, Noah C.; Giere, Matthew D, Ink-jet inks which prevent kogation and prolong resistor life in ink-jet pens.
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