Water-based ink for ink-jet recording, ink cartridge, and ink-jet recording method

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United States of America Patent

PATENT NO 9745485
SERIAL NO

14867444

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Abstract

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A water-based ink for ink-jet recording includes: a pigment; water; a nonionic surfactant having an ethylene oxide chain; an anionic surfactant having an ethylene oxide chain; and a penetrant having an ethylene oxide chain, wherein the nonionic surfactant, the anionic surfactant, and the penetrant satisfy the following conditions (I) to (III).

description='In-line Formulae' end='lead'−1≦X−Y≦1  condition (I):description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'−1≦Y−Z≦1  condition (II):description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'−1≦Z−X≦1  condition (III):description='In-line Formulae' end='tail'

    X: an average value of the number of ethylene oxide groups in the ethylene oxide chain of the nonionic surfactantY: an average value of the number of ethylene oxide groups in the ethylene oxide chain of the anionic surfactantZ: an average value of the number of ethylene oxide groups in the ethylene oxide chain of the penetrant.

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Patent Owner(s)

  • BROTHER KOGYO KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Shinpei Nagoya, JP 18 32
Maeda, Mitsunori Nagoya, JP 64 175

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