INK SET AND METHOD FOR INSPECTING RECORDING HEAD

To provide an ink set which is likely to introduce 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...

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Bibliographic Details
Main Authors INOUE TOYOTSUNE, TAKAORI YASUKO, OZAWA NORIAKI
Format Patent
LanguageEnglish
Japanese
Published 05.07.2022
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 is likely to introduce 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 inkjet contains a pigment, a pigment coating resin, first alkali metal ions, and water. The recording head filling liquid contains polyethylene glycol, second alkali metal ions, a surface active agent, and water. A mass average molecular weight of the polyethylene glycol is 180 or more and 800 or less. A content ratio of the surface active agent in the recording head filling liquid is more than 0.00 mass% and 0.10 mass% or less. Each of the first alkali metal ions and the second alkali metal ions contains at least one of Li+, Na+ and K+.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、第１アルカリ金属イオンと、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、第２アルカリ金属イオンと、界面活性剤と、水とを含有する。前記ポリエチレングリコールの質量平均分子量は、１８０以上８００以下である。前記記録ヘッド充填液における前記界面活性剤の含有割合は、０．００質量％超０．１０質量％以下である。前記第１アルカリ金属イオン及び前記第２アルカリ金属イオンは、それぞれ、Ｌｉ+、Ｎａ+及びＫ+のうち少なくとも１種を含む。【選択図】なし
Bibliography:Application Number: JP20200213640