# US 11,999,180 B2 · Recording method and recording device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,999,180 B2 - Document ID: US11999180B2 - Status: Granted - Kind: B2 - Application number: 17/562,120 - Filed: 2021-12-27 - Published: 2022-06-30 - Granted: 2024-06-04 - Earliest claimed: 2020-12-28 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Kei Hiruma; Hiroshi Takiguchi; Masaru Terada; Shintaro Asai; Hiroaki Kida; Tomoyuki Ushiyama - Web page: https://patentgrep.com/patent/US11999180B2 ## CPC - B41M 5/0023: {Digital printing methods characterised by the inks used (inks per se C09D11/00)} - B41J 2/14233: {of film type, deformed by bending and disposed on a diaphragm} - C09D 11/033: characterised by the solvent - C09D 11/037: characterised by the pigment - C09D 11/322: Pigment inks - C09D 11/36: based on non-aqueous solvents - B41J 2002/14241: {having a cover around the piezoelectric thin film element} - B41J 2002/14411: {Groove in the nozzle plate} - B41J 2002/14419: {Manifold} - B41J 2202/12: with ink circulating through the whole print head - 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) ## Abstract A recording method of the present disclosure, which is a recording method of performing recording on a recording medium by using a recording device including an ink jet head, includes ejecting a composition for ink jet from the ink jet head, in which the composition for ink jet contains a metal pigment, the metal pigment is formed of a plurality of scaly metal particles, the ink jet head includes a circulation flow path for circulating the composition for ink jet, and an average thickness of the metal particles determined by atomic force microscopy is 19 nm or less. ## Claims ### Claim 1 A recording method of performing recording on a recording medium by using a recording device including an ink jet head, the recording method comprising: electing a composition for ink jet from the ink jet head, wherein, the composition for ink jet contains a metal pigment, the metal pigment is formed of a plurality of metal particles having a scale shape, the ink jet head includes a circulation flow path for circulating the composition for ink jet, and an average thickness of the metal particles determined by atomic force microscopy is 19 nm or less, wherein an average aspect ratio of the metal particles, which is a ratio of a volume average particle size D50 of the metal particles to the average thickness of the metal particles determined by the atomic force microscopy, is 20 or more and 2,000 or less. ### Claim 2 (depends on 1) The recording method according to claim 1, wherein a content of the metal particles in the composition for ink jet is 0.2% by mass or more and 4.0% by mass or less. ### Claim 3 (depends on 1) The recording method according to claim 1, wherein the metal particles are formed of a material containing aluminum or an aluminum alloy. ### Claim 4 (depends on 1) The recording method according to claim 1, wherein the metal particles are surface-treated with a phosphorus compound or a silicon compound. ### Claim 5 (depends on 1) The recording method according to claim 1, wherein a volume average particle size D50 of the metal particles is 0.20 μm or more and 1.00 μm or less. ### Claim 6 (depends on 1) The recording method according to claim 1, wherein the average thickness of the metal particles determined by the atomic force microscopy is 5 nm or more and 19 nm or less. ### Claim 7 (depends on 1) A recording device comprising: an ink jet head, wherein the ink jet head includes a circulation flow path for circulating a composition for ink jet, and the recording method according to claim 1 is performed. ### Claim 8 A recording method of performing recording on a recording medium by using a recording device including an ink jet head, the recording method comprising: ejecting a composition for ink jet from the ink jet head, wherein the composition for ink jet contains a metal pigment, the metal pigment is formed of a plurality of metal particles having a scale shape, the ink jet head includes a circulation flow path for circulating the composition for ink jet, and an average thickness of the metal particles determined by atomic force microscopy is 19 nm or less, wherein the composition for ink jet is a solvent-based ink. ### Claim 9 (depends on 8) A recording device comprising: an ink jet head, wherein the ink jet head includes a circulation flow path for circulating a composition for ink jet, and the recording method according to claim 8 is performed. ### Claim 10 (depends on 8) The recording method according to claim 8, wherein a content of the metal particles in the composition for ink jet is 0.2% by mass or more and 4.0% by mass or less. ### Claim 11 (depends on 8) The recording method according to claim 8, wherein the metal particles are formed of a material containing aluminum or an aluminum alloy. ### Claim 12 (depends on 8) The recording method according to claim 8, wherein the metal particles are surface-treated with a phosphorus compound or a silicon compound. ### Claim 13 (depends on 8) The recording method according to claim 8, wherein a volume average particle size D50 of the metal particles is 0.20 μm or more and 1.00 μm or less. ### Claim 14 (depends on 8) The recording method according to claim 8, wherein the average thickness of the metal particles determined by the atomic force microscopy is 5 nm or more and 19 nm or less. ### Claim 15 A recording method of performing recording on a recording medium by using a recording device including an ink jet head, the recording method comprising: ejecting a composition for ink jet from the ink jet head, wherein the composition for ink jet contains a metal pigment, the metal pigment is formed of a plurality of metal particles having a scale shape, the ink jet head includes a circulation flow path for circulating the composition for ink jet, and an average thickness of the metal particles determined by atomic force microscopy is 19 nm or less, wherein a ratio of a circulation flow rate of the composition for ink jet flowing through the circulation flow path to a maximum ejection amount of the ink jet head is 0.50 or more and 15 or less. ### Claim 16 (depends on 15) The recording method according to claim 15, wherein a content of the metal particles in the composition for ink jet is 0.2% by mass or more and 4.0% by mass or less. ### Claim 17 (depends on 15) The recording method according to claim 15, wherein the metal particles are formed of a material containing aluminum or an aluminum alloy. ### Claim 18 (depends on 15) The recording method according to claim 15, wherein the metal particles are surface-treated with a phosphorus compound or a silicon compound. ### Claim 19 (depends on 15) The recording method according to claim 15, wherein a volume average particle size D50 of the metal particles is 0.20 μm or more and 1.00 μm or less. ### Claim 20 (depends on 15) The recording method according to claim 15, wherein the average thickness of the metal particles determined by the atomic force microscopy is 5 nm or more and 19 nm or less.