# US 2020/0399495 A1 · Liquid composition, device for applying liquid composition, image forming device, and image forming method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399495 A1 - Document ID: US20200399495A1 - Status: Published application - Kind: A1 - Application number: 16/772,474 - Filed: 2019-01-28 - Published: 2020-12-24 - Earliest claimed: 2018-03-06 - Assignees: Ricoh Company, Ltd. - Inventors: Dongsik JANG; Yukitaka WATARAI; Tsutomu MAEKAWA; Takashi TAMAI; Atsufumi HANAZAWA; Koji KATSURAGI - Web page: https://patentgrep.com/patent/US20200399495A1 ## CPC - 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 - 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)} - 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} - C09D 11/322: Pigment inks - C09D 11/40: Ink-sets specially adapted for multi-colour inkjet 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) - 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) ## Abstract A liquid composition includes an inorganic particle and a multivalent metal salt, wherein the liquid composition has a tacking force of 50 mN or less in an area of cast-coated paper where the liquid composition is applied in an amount of 0.12 mg/cm2 for the cast-coated paper followed by heating at 80 degrees C. for 15 seconds. ## Claims ### Claim 1 A liquid composition comprising: an inorganic particle; and a multivalent metal salt, wherein the liquid composition has a tacking force of 50 mN or less in an area of cast-coated paper where the liquid composition is applied in an amount of 0.12 mg/cm2 for the cast-coated paper followed by heating at 80 degrees C. for 15 seconds. ### Claim 2 (depends on 1) The liquid composition according to claim 1, wherein the liquid composition is applied before ink application. ### Claim 3 (depends on 1) The liquid composition according to claim 1, wherein the inorganic particle comprises a metal oxide. ### Claim 4 (depends on 1) The liquid composition according to claim 1, wherein the inorganic particle comprises at least one member selected from the group consisting of SiO2, Al2O3, TiO2, ZnO, and ZnO2. ### Claim 5 (depends on 1) The liquid composition according to claim 1, wherein the inorganic particle accounts for 0.5 to 1.0 percent by mass of a total amount of the liquid composition. ### Claim 6 (depends on 1) The liquid composition according to claim 1, wherein a proportion of the inorganic particle in the liquid composition to the multivalent metal salt in the liquid composition is 4.0 percent by mass or less. ### Claim 7 (depends on 1) The liquid composition according to claim 1, wherein the tacking force is 40 mN or less. ### Claim 8 (depends on 2) The liquid composition according to claim 2, wherein the multivalent metal salt causes aggregation of a coloring material contained in ink for the ink application. ### Claim 9 (depends on 1) A device for applying the liquid composition of claim 1, comprising: a liquid composition accommodating device accommodating the liquid composition of claim 1; and a liquid composition applying device configured to apply the liquid composition of claim 1 to a recording medium. ### Claim 10 (depends on 9) An image forming device comprising: the liquid composition accommodating device of claim 9; the liquid composition applying device of claim 9; and an ink applying device configured to apply ink to an area of the recording medium where the liquid composition is applied. ### Claim 11 (depends on 10) The image forming device according to claim 10, further comprising a member disposed in a conveyance path of the recording medium between a position of the liquid composition applying device and a position of the ink applying device, the member being configured to contact at least partially the area of the recording medium. ### Claim 12 (depends on 11) The image forming device according to claim 11, wherein the member comprises a roller. ### Claim 13 (depends on 1) An image forming method comprising: applying the liquid composition of claim 1 to the recording medium; and applying the ink to an area where the liquid composition of claim 1 is applied.