INK SET AND METHOD FOR INSPECTING RECORDING HEAD

To provide an ink set which easily introduces a recording head filling liquid into an ink flow channel in a recording head, and can effectively suppress aggregation of a pigment component in ink for inkjet in the recording head.SOLUTION: An ink set includes ink for inkjet, and a recording head filli...

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Bibliographic Details
Main Authors INOUE TOYOTSUNE, TAKAORI YASUKO, OZAWA NORIAKI
Format Patent
LanguageEnglish
Japanese
Published 29.07.2022
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
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Summary:To provide an ink set which easily introduces a recording head filling liquid into an ink flow channel in a recording head, and can effectively suppress aggregation of a pigment component in ink for inkjet in the recording head.SOLUTION: An ink set includes ink for inkjet, and a recording head filling liquid. The ink for the inkjet contains a pigment, a pigment covering resin, and water. The recording head filling liquid contains polyethylene glycol, a nonionic surface active agent, and water. Viscosity of the recording head filling liquid is 3 mPa s or more and 10 mPa s or less. A mass average molecular weight of the polyethylene glycol is 170 or more and 300 or less. A content ratio of the polyethylene glycol in the recording head filling liquid is 7.0 mass% or more and 55.0 mass% or less. The pigment covering resin contains a styrene-acrylic resin.SELECTED DRAWING: None 【課題】記録ヘッド充填液が記録ヘッド内のインク流路に導入され易く、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インクセットを提供する。【解決手段】インクセットは、インクジェット用インクと、記録ヘッド充填液とを備える。前記インクジェット用インクは、顔料と、顔料被覆樹脂と、水とを含有する。前記記録ヘッド充填液は、ポリエチレングリコールと、ノニオン界面活性剤と、水とを含有する。前記記録ヘッド充填液の粘度は、３ｍＰａ・ｓ以上１０ｍＰａ・ｓ以下である。前記ポリエチレングリコールの質量平均分子量は、１７０以上３００以下である。前記記録ヘッド充填液における前記ポリエチレングリコールの含有割合は、７．０質量％以上５５．０質量％以下である。前記顔料被覆樹脂は、スチレン－アクリル樹脂を含む。【選択図】なし
Bibliography:Application Number: JP20210005943