INK SET AND INKJET RECORDING METHOD

PROBLEM TO BE SOLVED: To provide an ink set for inkjet recording capable of increasing the optical density (OD value) of a recorded object and excellently suppressing ink bleeding in an recorded image.SOLUTION: The ink set containing a water-based ink for inkjet recording and a treatment liquid. The...

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Bibliographische Detailangaben
Hauptverfasser:	TANIGUCHI MASAHIKO, SAGO HIROMITSU, GOTO KAZUMA, HIGASHIYAMA SHUNICHI, KOGA SHIGEMI, AOYAMA MICHIKO, TSUDA MASAYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an ink set for inkjet recording capable of increasing the optical density (OD value) of a recorded object and excellently suppressing ink bleeding in an recorded image.SOLUTION: The ink set containing a water-based ink for inkjet recording and a treatment liquid. The water-based ink contains a phosphate group-modified self-dispersing pigment, water, and a water-soluble organic solvent. The treatment liquid contains an aggregating agent, water, and a water-soluble organic solvent. A dynamic surface tension of the water-based ink, measured under the condition where a life time is about 50 ms, is in the range of 35 to 45 mN/m. A dynamic surface tension of the treatment liquid, measured under the condition where a life time is about 50 ms, is in the range of 33 to 45 mN/m.