Solid red ink formulations

Patent metadata

Field	Value
Publication number	US-9605171-B2
Application number	US-201213667927-A
Country	US
Kind code	B2
Filing date	Nov 2, 2012
Priority date	Nov 2, 2012
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A solid ink including an ink vehicle and a colorant, the colorant includes an orange colorant and a red colorant, where the orange colorant absorbs light having a wavelength of from about 400 to about 560 nm, and where the red colorant absorbs light having a wavelength of from about 510 to 580 nm. The ink substantially matches PANTONE® Red 032 or PANTONE® Warm red.

First claim

We claim herein:

1. An ink comprising an ink vehicle that is a solid at room temperature, wherein said ink vehicle comprises a homogenous and uniform mix comprising ethylene/propylene copolymers, branched hydrocarbons, hydrocarbon-based waxes, paraffins, high molecular weight linear alcohols, microcrystalline waxes, polyethylene waxes, ester waxes, fatty acids, one or more amides, one or more resins and combinations thereof; and an orange pigment and red pigment, wherein said orange and red pigments are configured to provide a red color, wherein the orange pigment absorbs light having a wavelength of from about 400 nm to about 560 nm, and wherein said red pigment absorbs light having a wavelength of from about 510 nm to 580 nm, wherein said ink matches Red 032 or Warm Red in color, within a ΔE 2000 of about 3 or less and wherein said ink is a solid from about 20° C. to about 27° C. and is a jetting liquid from about 50° C. to about 150° C., wherein the jetting liquid has a viscosity of from about 1 centipoise to about 40 centipoise.

2. The ink of claim 1 , further comprising a shade-adjusting colorant.

3. The ink of claim 1 , wherein said orange pigment is partially transmissive in the wavelength region of from about 560 nm to about 570 nm and transmissive in the region from about 570 to about 700 nm.

4. The ink of claim 1 , wherein said red pigment is minimally transmissive from 380 nm to about 510 nm, is partially transmissive in the wavelength region of about 580 nm to about 590 nm, and is transmissive in the region of from about 590 nm to about 700 nm.

5. The ink of claim 1 , consisting essentially of hydrocarbon-based waxes, microcrystalline waxes, polyethylene waxes, or ester waxes, said one or more resins, and said orange pigment and said red pigment.

6. The ink of claim 1 , wherein said red pigment is selected from the group consisting of C.I. Pigment Red 1, C.I. Pigment Red 2, C.I. Pigment Red 3, C.I Pigment Red 4, C.I. Pigment Red 5, C.I. Pigment Red 6, C.I. Pigment Red 7, C.I. Pigment Red 8, C.I. Pigment Red 9, C.I. Pigment Red 10, C.I. Pigment Red 11, C.I. Pigment Red 12, C.I. Pigment Red 14, C.I. Pigment Red 15, C.I. Pigment Red 16, C.I. Pigment Red 17, C.I. Pigment Red 18, C.I. Pigment Red 19, C.I. Pigment Red 21, C.I. Pigment Red 22, C.I. Pigment Red 23, C.I. Pigment Red 30, C.I. Pigment Red 31, C.I. Pigment Red 32, C.I. Pigment Red 37, C.I. Pigment Red 38, C.I. Pigment Red 40, C.I. Pigment Red 41, C.I. Pigment Red 42, C.I. Pigment Red 48(Ca), C.I. Pigment Red 48(Mn), C.I. Pigment Red 57(Ca), C.I. Pigment Red 57: 1, C.I. Pigment Red 88, C.I. Pigment Red 112, C.I. Pigment Red 114, C.I. Pigment Red 122, C.I. Pigment Red 123, C.I. Pigment Red 144, C.I. Pigment Red 146, C.I. Pigment Red 149, C.I. Pigment Red 150, C.I. Pigment Red 166, C.I. Pigment Red 168, C.I. Pigment Red 170, C.I. Pigment Red 170:1, C.I. Pigment Red 171, C.I. Pigment Red 175, C.I. Pigment Red 176, C.I. Pigment Red 177, C.I. Pigment Red 178, C.I. Pigment Red 179, C.I. Pigment Red 184, C.I. Pigment Red 185, C.I. Pigment Red 187, C.I. Pigment Red 202, C.I. Pigment Red 209, C.I. Pigment Red 219, C.I. Pigment Red 224, C.I. Pigment Red 245, and combinations thereof.

7. The ink of claim 1 , wherein said orange pigment is selected from the group consisting of C.I. Pigment Orange 1, C.I. Pigment Orange 2, C.I. Pigment Orange 5, C.I. Pigment Orange 7, C.I. Pigment Orange 13, C.I. Pigment Orange 15, C.I. Pigment Orange 16, C.I. Pigment Orange 17, C.I. Pigment Orange 19, C.I. Pigment Orange 24, C.I. Pigment Orange 34, C.I. Pigment Orange 36, C.I. Pigment Orange 38, C.I. Pigment Orange 40, C.I. Pigment Orange 43, and C.I. Pigment Orange 66 and combinations thereof.

8. The ink of claim 1 , wherein said red and orange pigments are present in an amount of from about 0.05% to about 6% by weight of said ink.

9. The ink of claim 1 , wherein said ink vehicle is selected from the group consisting of ethylene/propylene copolymers, branched hydrocarbons, paraffins, high molecular weight linear alcohols, fatty acids and combinations thereof; wherein said colorant comprises an orange pigment and a red pigment, and said ink comprises one or more resins.

10. The ink of claim 1 , wherein said ink vehicle further comprises an antioxidant.

11. The ink of claim 1 , wherein said ink vehicle further comprises a dispersant.

12. The ink of claim 1 , wherein said ink exhibits lightfastness of about 6 or greater on the Blue Wool Scale.

13. The ink of claim 1 , wherein said ink has a hue angle from about 29° to about 35° and an L* from about 52 to about 61.

14. The ink of claim 1 , wherein said red pigment comprises C.I. Pigment Red 170.

15. The ink of claim 1 , wherein said orange pigment comprises C.I. Pigment Orange 34.

16. The ink of claim 1 , wherein said ink matches Red 032 and comprises C.I. Pigment Red 170 in an amount of from about 1 to about 5 wt % and C.I. Pigment Orange 34 in an amount of from about 0.1 to about 0.75 wt %.

17. The ink of claim 1 , wherein said ink matches Warm Red and comprises C.I Pigment Red 170 in an amount of from about 1.5 to about 4 wt % and C.I. Pigment Orange 34 in an amount of from about 0.5 to about 2.5 wt %.

18. A method of making the ink of claim 1 comprising: preparing a red colorant composition comprising an orange colorant and a red colorant; mixing said red colorant composition with an ink vehicle, one or more resins, and optionally one or more amides, an antioxidant a dispersant or combination thereof to form a mixture; heating said mixture; and cooling said heated mixture to form a solid ink block at temperatures from about 20° C. to about 27° C., wherein said ink matches Red 032 or Warm Red in color within a ΔE 2000 of about 3 or less.

19. The method of claim 18 , wherein said orange colorant comprises C.I. Pigment Orange 34 and said red colorant comprises C.I. Pigment Red 170.

20. The ink of claim 1 , wherein said solid comprises a stick.

Assignees

• Xerox Corp

Inventors

• Farrugia Valerie M
• Allen C Geoffrey
• Wosnick Jordan H
• Rotberg Eric
• Moffat Karen A
• Veregin Richard P N
• Yang Suxia
• Abraham Biby E

Classifications

• C09D11/322

  Pigment inks · CPC title

• C09D11/34 Primary

  Hot-melt inks · CPC title

• C09D11/12

  based on waxes or bitumen · CPC title

• C09D11/00

  Inks · CPC title

• C09D11/02 Primary

  Printing inks (C09D11/30 takes precedence) · CPC title