Magenta ink composition

Compositions: coating or plastic – Coating or plastic compositions – Marking

Reexamination Certificate

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Details

C106S031480, C106S031510, C106S031580, C106S031770, C106S031780, C106S031800, C106S031860, C347S100000, C428S195100

Reexamination Certificate

active

07323045

ABSTRACT:
Objects of the present invention are to provide a magenta ink composition having good light-fastness and gas resistance, and excellent moisture resistance and clogging resistance, and to provide a magenta ink composition having excellent colorability in addition to these characteristics. The present invention provides a magenta ink composition containing, as colorants, at least one selected from compounds represented by undermentioned formula (1) and salts thereof, and at least one selected from compounds represented by undermentioned formula (2) and salts thereof. Moreover, the present invention also provides a magenta ink composition containing, as colorants, the above and in addition at least one selected from compounds represented by undermentioned formula (3). (Definitions of the symbols in the formulae are as in the claims.)

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Patent Abstracts of Japan of JP 7-90211 dated Apr. 4, 1995 and JPO English Computer-Generated Translation.
Patent Abstracts of Japan of JP 2002-332419 dated Nov. 22, 2002 and JPO English Computer-Generated Translation.
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Patent Abstracts of Japan of JP 2000-290559 dated Oct. 17, 2000 and JPO English Computer-Generated Translation.

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