RECORDING HEAD FILING LIQUID, INK SET AND INSPECTION METHO OF RECORDING HEAD

• Main Authors: INOUE TOYOTSUNE, TAKAORI YASUKO, OZAWA NORIAKI
• Format: Patent
• Language: English; Japanese
• Published: 15.09.2022
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a filling liquid that is easily introduced into an ink path inside a recording head, can suppress generation of foams, and can effectively suppress coagulation of a pigment component in an inkjet ink in a recording head.SOLUTION: A recording head filling liquid contains 1,3-propanediol, a nonionic surfactant, and water. A content of 1,3-propanediol is 0.5 mass% or more and 42.0 mass% or less. The nonionic surfactant includes acetylene glycol and an ethylene oxide adduct of acetylene glycol. In the nonionic surfactant, when mass of the acetylene glycol is defined to be A and mass of the ethylene oxide adduct of the acetylene glycol is defined to be B, B/A is 0.15 or more and 0.95 or less.SELECTED DRAWING: None 【課題】記録ヘッド内のインク流路に導入され易く、気泡の発生を抑制でき、かつ記録ヘッド内でインクジェット用インク中の顔料成分が凝集することを効果的に抑制できる充填液を提供する。【解決手段】記録ヘッド充填液は、１，３－プロパンジオールと、ノニオン界面活性剤と、水とを含有する。前記１，３－プロパンジオールの含有割合は、０．５質量％以上４２．０質量％以下である。前記ノニオン界面活性剤は、アセチレングリコールと、アセチレングリコールのエチレンオキシド付加物とを含む。前記ノニオン界面活性剤において、前記アセチレングリコールの質量をＡ、前記アセチレングリコールのエチレンオキシド付加物の質量をＢとしたときに、Ｂ／Ａは、０．１５以上０．９５以下である。【選択図】なし