Oil-based ink composition

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United States of America Patent

PATENT NO 9428660
APP PUB NO 20140135432A1
SERIAL NO

14161483

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Abstract

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An oil-based ink composition comprising a colorant, an organic solvent and a polymeric compound, and optionally an alkylamine ethylene oxide derivative as a pH adjusting agent, in which the pH of an aqueous phase is from 5.5 to 10, when ions in the ink composition are transferred to water. This oil-based ink composition prevents corrosion of a nozzle plate and is improved in storage stability, and thus can ensure printer reliability such as ink-jet stability obtainable even after long storage thereof, and can withstand outdoor service environments.

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Patent Owner(s)

  • MAXELL HOLDINGS, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dobata, Miyuki Ibaraki, JP 2 10
Nishimoto, Tomohisa Ibaraki, JP 7 12
Terasawa, Kanryo Ibaraki, JP 4 23

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