Ink jet black ink, ink set, ink jet recording method, ink...

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

Reexamination Certificate

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C106S031520, C347S100000

Reexamination Certificate

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11339770

ABSTRACT:
An object of the present invention is to provide an ink jet black ink by which an image quality comparable to that of a silver halide photograph is obtained with a compatibility between a high fastness and a high image quality when the ink is printed on a recording medium, and which is excellent in optical density and color tone particularly in half tone, and is also excellent in gas resistance. The present invention provides an ink jet black ink comprising a dye and a black pigment, wherein the dye is at least one kind selected from the group consisting of compounds represented by the following formula (I) or salts thereof, and compounds represented by the following formula (II) or salts thereof

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RN554433-03-3 Registry, copyright 2006 ACS on STN.
RN546079-42-9 Registry, copyright 2006 ACS on STN.

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