# US 9,004,663 B2 · Inkjet printing methods and ink sets > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,004,663 B2 - Document ID: US9004663B2 - Status: Granted - Kind: B2 - Application number: 13/872,251 - Filed: 2013-04-29 - Published: 2013-09-12 - Granted: 2015-04-14 - Earliest claimed: 2006-12-21 - Assignees: Agfa Graphics NV - Applicants: Agfa Graphics NV - Inventors: Etienne Van Thillo; Frank De Voeght - Web page: https://patentgrep.com/patent/US9004663B2 ## CPC - B41J 2/015: characterised by the jet generation process (B41J2/215 takes precedence) - B41J 2/01: Ink jet - B41J 2/175: Ink supply systems {; Circuit parts therefor} - B41J 2/17503: {Ink cartridges} - B41J 2/2107: {characterised by the ink properties (supplying ink in a solid state B41J2/17593)} - B41J 2/211: {Mixing of inks, solvent or air prior to paper contact} - B41J 2/2114: {Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence)} - B41M 5/0023: {Digital printing methods characterised by the inks used (inks per se C09D11/00)} - C09D 11/101: Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing - C09D 11/322: Pigment inks - C09D 11/40: Ink-sets specially adapted for multi-colour inkjet printing - G01D 11/00: Component parts of measuring arrangements not specially adapted for a specific variable (G01D13/00, G01D15/00 take precedence) - B41J 2/2117: {Ejecting white liquids} - B41M 7/0072: {using mechanical wave energy, e.g. ultrasonics; using magnetic or electric fields, e.g. electric discharge, plasma} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) - 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) - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ## Abstract An inkjet printing method includes, in order, the steps of a) providing to an inkjet printer at least two or more colorless liquids having a different composition and at least one color inkjet ink; b) mixing the color inkjet ink in a controlled amount with the two or more colorless liquids; and c) printing the ink-mixture of the color inkjet ink and the two or more colorless liquids with the inkjet printer onto an ink-receiver. ## Claims ### Claim 1 A color inkjet ink set comprising: two or more colorless liquids having a different composition; at least one radiation curable color inkjet ink containing a colorant; wherein the colorant is a pigment; and the two or more colorless liquids and the at least one radiation curable color inkjet ink include a polymerizable compound, and an amount and/or type of the polymerizable compound in at least one of the two or more colorless liquids differs from an amount and/or type of the polymerizable compound in the at least one radiation curable color inkjet ink; wherein a surface tension of at least one of the two or more colorless liquids differs by more than 3.0 mN/m from a surface tension of the at least one radiation curable color inkjet ink. ### Claim 2 (depends on 1) The color inkjet ink set according to claim 1, wherein the color inkjet ink set comprises cyan, magenta, yellow, and black inkjet inks. ### Claim 3 (depends on 1) The color inkjet ink set according to claim 1, wherein the at least one radiation curable color inkjet ink includes a vinyl ether acrylate. ### Claim 4 A color inkjet ink set comprising: two or more colorless liquids having a different composition; at least one radiation curable color inkjet ink containing a colorant; wherein the colorant is a pigment; and the two or more colorless liquids and the at least one radiation curable color inkjet ink include a polymerizable compound, and an amount and/or type of the polymerizable compound in at least one of the two or more colorless liquids differs from an amount and/or type of the polymerizable compound in the at least one radiation curable color inkjet ink; wherein a viscosity of at least one of the two or more colorless liquids differs by more than 5.0 mPa·s at 30° C. and at a shear rate of 100 s-1 from a viscosity of the at least one radiation curable color inkjet ink. ### Claim 5 (depends on 4) The color inkjet ink set according to claim 4, wherein the color inkjet ink set comprises cyan, magenta, yellow, and black inkjet inks. ### Claim 6 (depends on 4) The color inkjet ink set according to claim 4, wherein the at least one radiation curable color inkjet ink includes a vinyl ether acrylate. ### Claim 7 A color inkjet ink set comprising: two or more colorless liquids having a different composition; at least one radiation curable color inkjet ink containing a colorant; wherein the colorant is a pigment; and the two or more colorless liquids and the at least one radiation curable color inkjet ink include a polymerizable compound, and an amount and/or type of the polymerizable compound in at least one of the two or more colorless liquids differs from an amount and/or type of the polymerizable compound in the at least one radiation curable color inkjet ink; wherein the two or more colorless liquids and the at least one radiation curable color inkjet ink include an initiator, and an amount and/or type of the initiator in at least one of the two or more colorless liquids differs from an amount and/or type of the initiator in the at least one radiation curable color inkjet ink. ### Claim 8 (depends on 7) The color inkjet ink set according to claim 7, wherein the color inkjet ink set comprises cyan, magenta, yellow, and black inkjet inks. ### Claim 9 (depends on 7) The color inkjet ink set according to claim 7, wherein the at least one radiation curable color inkjet ink includes a vinyl ether acrylate. ### Claim 10 A color inkjet ink set comprising: two or more colorless liquids having a different composition; at least one radiation curable color inkjet ink containing a colorant; wherein the colorant is a pigment; and the two or more colorless liquids and the at least one radiation curable color inkjet ink include a polymerizable compound, and an amount and/or type of the polymerizable compound in at least one of the two or more colorless liquids differs from an amount and/or type of the polymerizable compound in the at least one radiation curable color inkjet ink; wherein the two or more colorless liquids and the at least one radiation curable color inkjet ink include a polymerization synergist, and an amount and/or type of the polymerization synergist in at least one of the two or more colorless liquids differs from an amount and/or type of the polymerization synergist in the at least one radiation curable color inkjet ink. ### Claim 11 (depends on 10) The color inkjet ink set according to claim 10, wherein the color inkjet ink set comprises cyan, magenta, yellow, and black inkjet inks. ### Claim 12 (depends on 10) The color inkjet ink set according to claim 10, wherein the at least one radiation curable color inkjet ink includes a vinyl ether acrylate.