# US 11,898,043 B2 · Ink jet ink composition set and ink jet recording method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,043 B2 - Document ID: US11898043B2 - Status: Granted - Kind: B2 - Application number: 17/460,939 - Filed: 2021-08-30 - Published: 2022-03-03 - Granted: 2024-02-13 - Earliest claimed: 2020-08-31 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Kazuto Aoki; Ryota Miyasa; Hideki Okada; Masakazu Ohashi - Web page: https://patentgrep.com/patent/US11898043B2 ## CPC - C09D 11/322: Pigment inks - C09D 11/102: containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds - C09D 11/107: from unsaturated acids or derivatives thereof - C09D 11/40: Ink-sets specially adapted for multi-colour inkjet printing - D06P 1/44: using insoluble pigments or auxiliary substances, e.g. binders - D06P 1/5207: {Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds} - D06P 1/5221: {Polymers of unsaturated hydrocarbons, e.g. polystyrene polyalkylene} - D06P 1/525: {Polymers of unsaturated carboxylic acids or functional derivatives thereof} - D06P 1/5257: {(Meth)acrylic acid} - D06P 1/5264: {Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds} - D06P 1/5271: {Polyesters; Polycarbonates; Alkyd resins} - D06P 1/5285: {Polyurethanes; Polyurea; Polyguanides} - D06P 5/30: Ink jet printing - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - D06P: DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM ## Abstract An ink jet ink composition set includes a white ink jet ink composition and a nonwhite ink jet ink composition. The white ink jet ink composition contains a white pigment, resin particles, and water, and the nonwhite ink jet ink composition contains a nonwhite pigment, resin particles, and water. The white pigment has cation responsiveness, and the absolute value of zeta potential of the white pigment is lower than the absolute value of zeta potential of the nonwhite pigment. ## Claims ### Claim 1 An ink jet ink composition set comprising: a white ink jet ink composition; and a nonwhite ink jet ink composition, wherein the white ink jet ink composition contains a white pigment, resin particles, and water; the nonwhite ink jet ink composition contains a nonwhite pigment, resin particles, and water, the nonwhite pigment being at least one of a cyan pigment a yellow pigment, a magenta pigment, and a black pigment; the white pigment has cation responsiveness; and the absolute value of zeta potential of the white pigment is lower than the absolute value of zeta potential of the nonwhite pigment. ### Claim 2 (depends on 1) The ink jet ink composition set according to claim 1, wherein one or two or more of the nonwhite pigment and the resin particles contained in the nonwhite ink jet ink composition have the cation responsiveness. ### Claim 3 (depends on 1) The ink jet ink composition set according to claim 1, wherein the nonwhite pigment in the nonwhite ink jet ink composition has the cation responsiveness. ### Claim 4 (depends on 1) The ink jet ink composition set according to claim 1, wherein the set is used for textile printing on a fabric, and the fabric is a fabric treated with a cationic compound. ### Claim 5 (depends on 1) The ink jet ink composition set according to claim 1, wherein the white pigment contains titanium oxide. ### Claim 6 (depends on 1) The ink jet ink composition set according to claim 1, wherein the specific gravity of the white pigment is higher than the specific gravity of the nonwhite pigment. ### Claim 7 (depends on 1) The ink jet ink composition set according to claim 1, wherein the resin particles in the white ink jet ink composition have cation responsiveness. ### Claim 8 (depends on 1) The ink jet ink composition set according to claim 1, wherein the nonwhite ink jet ink composition is used by being adhered to overlap a region where the white ink jet ink composition is adhered. ### Claim 9 (depends on 1) The ink jet ink composition set according to claim 1, wherein the white ink jet ink composition and the nonwhite ink jet ink composition have a surface tension of 20 mN/m or more and 35 mN/m or less. ### Claim 10 (depends on 1) An ink jet recording method performed by using the ink jet ink composition set according to claim 1, the method comprising: adhering the white ink jet ink composition to a fabric by ejecting the white ink jet ink composition; and adhering the nonwhite ink jet ink composition to a region where the white ink jet ink composition has been adhered, wherein the nonwhite ink jet ink composition is adhered without drying after the white ink jet ink composition is adhered. ### Claim 11 (depends on 10) The ink jet recording method according to claim 10, wherein the adhesion of the nonwhite ink jet ink composition is started within 1 minute after the completion of the adhesion of the white ink jet ink composition.