INKJET INK SET

• US 20160152858A1
• Filed: 08/14/2013
• Published: 06/02/2016
• Est. Priority Date: 08/14/2013
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Visnyak, Elizabeth Ann, Emamjomeh, Ali, Sarkisian, George, Ingle, David Michael, Guzman, Minedys Macias
• Granted Patent: US 9,822,276 B2
• Time in Patent Office: Days
• CPC Class Codes: B41J 2/2107 characterised by the ink properties supplying ink in a solid state B41J2/17593
• CPC Class Codes: B41M 5/0011 Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating after-treatment of prints B41M7/00; printers for treating or overcoating copy materials before, during or after printing B41J11/0015
• CPC Class Codes: B41M 7/00 After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock pre-treatment or treatment during printing B41M5/0011; printers for treating or overcoating copy materials before, during or after printing B41J11/0015
• CPC Class Codes: C09D 11/12 based on waxes or bitumen
• CPC Class Codes: C09D 11/322 Pigment inks
• CPC Class Codes: C09D 11/324 containing carbon black
• CPC Class Codes: C09D 11/40 Ink-sets specially adapted for multi-colour inkjet printing
• CPC Class Codes: C09D 11/54 Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
• CPC Class Codes: C09D 133/062 Copolymers with monomers not covered by C09D133/06

Abstract

Examples provide inkjet ink sets and related methods. An ink set may include a pre-treatment fixing fluid, an ink, and a post-treatment fluid including a wax and a binder present in the post-treatment fluid in a range of about 10 weight percent to about 30 weight percent.

Claims

1. An ink set, comprising:

a pre-treatment fixing fluid including a metal salt;

an ink including an ink colorant and an ink vehicle; and

a post-treatment fluid including a wax and a binder, the binder present in the post-treatment fluid in a range of about 10 weight percent to about 30 weight percent.

2. The ink set of claim 1, wherein the binder is present in the post-treatment fluid in a range of about 20 weight percent to about 30 weight percent.

3. The ink set of claim 1, wherein the binder is a latex.

4. The ink set of claim 3, wherein the latex is selected from a group consisting of acrylic polymers or copolymers, vinyl acetate polymers or copolymers, polyester polymers or copolymers, vinylidene chloride polymers or copolymers, butadiene polymers or copolymers, styrene-butadiene copolymers, acrylonitrile-butadiene copolymers, and mixtures thereof.

5. The ink set of claim 1, wherein the wax is present in the post-treatment fluid in a range of about 0.5 weight percent to about 2.5 weight percent.

6. The ink set of claim 1, wherein the metal salt includes a polyvalent metal cation selected from a group consisting of Ca²⁺, Mg²⁺, or Zn²⁺, and mixtures thereof.

7. The ink set of claim 1, wherein the ink colorant is a pigment.

8. The ink set of claim 1, wherein the ink set includes a plurality of other inks, each including an ink colorant and an ink vehicle.

9. The ink set of claim 1, further comprising a first inkjet ink cartridge containing the pre-treatment fixing fluid, at least one second inkjet ink cartridge containing the ink, and a third inkjet ink cartridge containing the post-treatment fluid.

10. The ink set of claim 1, wherein the metal salt is present in the pre-treatment fixing fluid in a range of about 3 weight percent to about 10 weight percent, the wax is present in the post-treatment fluid in a range of about 0.5 weight percent to about 2.5 weight percent, and the binder is present in the post-treatment fluid in a range of about 12 weight percent to about 20 weight percent.

11. A method of producing images on media, comprising:

separately inkjetting onto the media, in order, a pre-treatment fixing fluid, an ink, and a post-treatment fluid including a wax and a binder, the binder present in the post-treatment fluid in a range of about 10 weight percent to about 30 weight percent.

12. The method of claim 11, wherein said inkjetting the post-treatment fluid comprises inkjetting the post-treatment fluid after the pre-treatment fixing fluid and the ink dry.

13. The method of claim 12, further comprising performing a drying operation after said inkjetting the ink, before said inkjetting the post-treatment fluid.

14. The method of claim 11, wherein said inkjetting the post-treatment fluid is performed before the ink and the pre-treatment fixing fluid substantially dry.

15. The method of claim 11, wherein said inkjetting the pre-treatment fixing fluid comprises inkjetting the pre-treatment fixing fluid by a first inkjet ink cartridge, wherein said inkjetting the ink comprises inkjetting the ink by a second inkjet ink cartridge, and wherein said inkjetting the post-treatment fluid comprises inkjetting the post-treatment by a third inkjet ink cartridge.