WATER-BASED INK

PROBLEM TO BE SOLVED: To provide a water-based ink which is used for ink jet recording, uses a colorant having especially excellent water resistance, light resistance and compatibility with resins and suitable for the ink jet uses, and exhibits excellent performances such as light resistance and sto...

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Hauptverfasser: KOUGO OSAMU, OI TATSU
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a water-based ink which is used for ink jet recording, uses a colorant having especially excellent water resistance, light resistance and compatibility with resins and suitable for the ink jet uses, and exhibits excellent performances such as light resistance and storage stability. SOLUTION: This water-based ink comprises at least a water-insoluble colorant, water and a resin as main components to form an emulsion is characterized by containing a colorant represented by general formula (1) [R1 to R5 are each independently H, a substituted or non-substituted alkyl or -CONR10R11 (R10 and R11 are each independently H, or a substituted or non-substituted alkyl group); R6 is a substituted or non-substituted alkyl; R7 is an alkyl; R8 and R9 are each independently H, or a substituted or non-substituted alkyl]. COPYRIGHT: (C)2005,JPO&NCIPI