# US 11,077,691 B2 · Method for producing printed matter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,691 B2 - Document ID: US11077691B2 - Status: Granted - Kind: B2 - Application number: 16/803,591 - Filed: 2020-02-27 - Published: 2020-09-03 - Granted: 2021-08-03 - Earliest claimed: 2019-02-28 - Assignees: Riso Kagaku Corporation - Applicants: Riso Kagaku Corporation - Inventors: Yuki Urano; Akiko Hayashi; Mamoru Fukuda - Web page: https://patentgrep.com/patent/US11077691B2 ## CPC - B41M 5/0017: {Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying} - B41J 2/2107: {characterised by the ink properties (supplying ink in a solid state B41J2/17593)} - B41J 2/2114: {Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence)} - B41J 2/2132: {Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding (methods for local corrections by dot omission, image edge enhancement, or multi-pass mask selection G06K15/102; colour conversion H04N1/40)} - B41M 5/0047: {by ink-jet printing} - C09D 11/10: based on artificial resins - C09D 11/322: Pigment inks - C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes - 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 - D06P 1/5242: {Polymers of unsaturated N-containing compounds} - D06P 1/5278: {Polyamides; Polyimides; Polylactames; Polyalkyleneimines} - D06P 1/5285: {Polyurethanes; Polyurea; Polyguanides} - D06P 1/6533: {Aliphatic, araliphatic or cycloaliphatic} - D06P 1/67333: {Salts or hydroxides (hydroxylamines D06P1/67308)} - D06P 1/67341: {of elements different from the alkaline or alkaline-earth metals or with anions containing those elements (D06P1/67383 takes precedence)} - D06P 1/67358: {Halides or oxyhalides} - D06P 5/001: {Special chemical aspects of printing textile materials} - D06P 5/002: {Locally enhancing dye affinity of a textile material by chemical means} - D06P 5/30: Ink jet printing - B41J 2/2117: {Ejecting white liquids} - B41M 5/0058: {on metals and oxidised metal surfaces} - B41M 5/0064: {on plastics, horn, rubber, or other organic polymers} - B41M 5/007: {on glass, ceramic, tiles, concrete, stones, etc.} - B41M 5/0076: {on wooden surfaces, leather, linoleum, skin, or flowers} - 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) - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - 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 A method for producing printed matter is disclosed that includes applying a pretreatment liquid containing a resin and a pretreatment liquid containing a coagulant to a substrate, and after the applying of these pretreatment liquids, applying an aqueous inkjet ink to the substrate using an inkjet system. ## Claims ### Claim 1 A method for producing printed matter, the method comprising: applying a pretreatment liquid A comprising a resin and a pretreatment liquid B comprising a coagulant to a substrate, each using an inkjet system; and after the applying of the pretreatment liquid A and the pretreatment liquid B, applying an aqueous inkjet ink to the substrate using an inkjet system, wherein the resin in the pretreatment liquid A comprises a water-dispersible resin comprising a water-dispersible urethane resin, the pretreatment liquid A and the pretreatment liquid B are jetted so as to land on the substrate in a fixed order, and for a first pretreatment liquid that lands on the substrate first between the pretreatment liquid A and the pretreatment liquid B, at least one time difference selected from the group consisting of a landing time difference ΔTX between two dots that are arranged along a main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along the main scanning direction, and a landing time difference ΔTY between two dots that are arranged along a direction that intersects the main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along a direction that intersects the main scanning direction, is at least 10 ms. ### Claim 2 (depends on 1) The method for producing printed matter according to claim 1, wherein the water-dispersible resin comprises at least one resin selected from the group consisting of a cationic water-dispersible resin and a nonionic water-dispersible resin. ### Claim 3 (depends on 2) The method for producing printed matter according to claim 2, wherein the water-dispersible resin comprises the nonionic water-dispersible resin. ### Claim 4 (depends on 1) The method for producing printed matter according to claim 1, wherein the coagulant of the pretreatment liquid B comprises an organic acid. ### Claim 5 (depends on 1) The method for producing printed matter according to claim 1, wherein the pretreatment liquid A and the pretreatment liquid B are jetted so as to land on the substrate in an order of the pretreatment liquid A followed by the pretreatment liquid B. ### Claim 6 (depends on 5) The method for producing printed matter according to claim 5, further comprising, prior to the applying of the pretreatment liquid A and the pretreatment liquid B to the substrate each using an inkjet system, applying a pretreatment liquid P comprising a coagulant to the substrate. ### Claim 7 (depends on 1) The method for producing printed matter according to claim 1, wherein the inkjet system used for the applying of the pretreatment liquid A and the pretreatment liquid B is a serial-type inkjet system. ### Claim 8 (depends on 1) The method for producing printed matter according to claim 1, wherein jetting of a second pretreatment liquid that is jetted onto the substrate later between the pretreatment liquid A and the pretreatment liquid B, and jetting of the aqueous inkjet ink are each performed using a wet-on-wet method. ### Claim 9 (depends on 6) The method for producing printed matter according to claim 6, wherein the coagulant of the pretreatment liquid P comprises a coagulant that causes aggregation of the water-dispersible resin of the pretreatment liquid A, and the coagulant of the pretreatment liquid B comprises a coagulant that causes aggregation of the aqueous inkjet ink. ### Claim 10 (depends on 6) The method for producing printed matter according to claim 6, wherein the coagulant of the pretreatment liquid P comprises a polyvalent metal salt. ### Claim 11 (depends on 6) The method for producing printed matter according to claim 6, wherein the coagulant of the pretreatment liquid B comprises a polyvalent metal salt. ### Claim 12 (depends on 6) The method for producing printed matter according to claim 6, wherein the coagulant of the pretreatment liquid P and the coagulant of the pretreatment liquid B comprise same polyvalent metal salt. ### Claim 13 (depends on 1) The method for producing printed matter according to claim 1, wherein the coagulant comprises at least one material selected from the group consisting of a cationic resin, a polyvalent metal salt, an organic acid, and a solvent having an SP value of not more than 10 (cal/cm3)½, and the organic acid comprises at least one acid selected from the group consisting of formic acid, acetic acid, oxalic acid, citric acid, malic acid, ascorbic acid, and lactic acid. ### Claim 14 (depends on 13) The method for producing printed matter according to claim 13, wherein the organic acid comprises at least one acid selected from the group consisting of formic acid, acetic acid, oxalic acid, and ascorbic acid. ### Claim 15 A method for producing printed matter, the method comprising: applying a pretreatment liquid A comprising a resin and a pretreatment liquid B comprising a coagulant to a substrate, each using an inkjet system; and after the applying of the pretreatment liquid A and the pretreatment liquid B, applying an aqueous inkjet ink to the substrate using an inkjet system, wherein the resin of the pretreatment liquid A comprises a water-dispersible resin, the water-dispersible resin comprising at least one resin selected from the group consisting of a cationic water-dispersible resin and a nonionic water-dispersible resin, the pretreatment liquid A and the pretreatment liquid B are jetted so as to land on the substrate in a fixed order, and for a first pretreatment liquid that lands on the substrate first between the pretreatment liquid A and the pretreatment liquid B, at least one time difference selected from the group consisting of a landing time difference ΔTX between two dots that are arranged along a main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along the main scanning direction, and a landing time difference ΔTY between two dots that are arranged along a direction that intersects the main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along a direction that intersects the main scanning direction, is at least 10 ms. ### Claim 16 (depends on 15) The method for producing printed matter according to claim 15, wherein the water-dispersible resin comprises a nonionic water-dispersible resin. ### Claim 17 A method for producing printed matter, the method comprising: applying a pretreatment liquid P comprising a coagulant to a substrate; after the applying of the pretreatment liquid P, applying a pretreatment liquid A comprising a resin and a pretreatment liquid B comprising a coagulant to the substrate, each using an inkjet system; and after the applying of the pretreatment liquid A and the pretreatment liquid B, applying an aqueous inkjet ink to the substrate using an inkjet system, wherein the pretreatment liquid A and the pretreatment liquid B are jetted so that the pretreatment liquid A lands on the substrate followed by the pretreatment liquid B, and for the pretreatment liquid A that lands on the substrate before the pretreatment liquid B, at least one time difference selected from the group consisting of a landing time difference ΔTX between two dots that are arranged along a main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along the main scanning direction, and a landing time difference ΔTY between two dots that are arranged along a direction that intersects the main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along a direction that intersects the main scanning direction, is at least 10 ms. ### Claim 18 A method for producing printed matter, the method comprising: applying a pretreatment liquid A comprising a resin and a pretreatment liquid B comprising a coagulant to a substrate, each using an inkjet system; and after the applying of the pretreatment liquid A and the pretreatment liquid B, applying an aqueous inkjet ink to the substrate using an inkjet system, wherein the pretreatment liquid A and the pretreatment liquid B are jetted so as to land on the substrate in a fixed order, for a first pretreatment liquid that lands on the substrate first between the pretreatment liquid A and the pretreatment liquid B, at least one time difference selected from the group consisting of a landing time difference ΔTX between two dots that are arranged along a main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along the main scanning direction, and a landing time difference ΔTY between two dots that are arranged along a direction that intersects the main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along a direction that intersects the main scanning direction, is at least 10 ms, and the inkjet system used for the applying of the pretreatment liquid A and the pretreatment liquid B is a serial-type inkjet system. ### Claim 19 A method for producing printed matter, the method comprising: applying a pretreatment liquid A comprising a resin and a pretreatment liquid B comprising a coagulant to a substrate, each using an inkjet system; and after the applying of the pretreatment liquid A and the pretreatment liquid B, applying an aqueous inkjet ink to the substrate using an inkjet system, wherein the pretreatment liquid A and the pretreatment liquid B are jetted so as to land on the substrate in a fixed order, for a first pretreatment liquid that lands on the substrate first between the pretreatment liquid A and the pretreatment liquid B, at least one time difference selected from the group consisting of a landing time difference ΔTX between two dots that are arranged along a main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along the main scanning direction, and a landing time difference ΔTY between two dots that are arranged along a direction that intersects the main scanning direction and for which a distance between the dots reaches a shortest value among any two dots arranged along a direction that intersects the main scanning direction, is at least 10 ms, and jetting of a second pretreatment liquid between the pretreatment liquid A and the pretreatment liquid B that is jetted onto the substrate later, and jetting of the aqueous inkjet ink are each performed using a wet-on-wet method.