Emulsion ink

Details Emulsion ink Emulsion ink

2008-07-08

2008-07-08

Klemanski, Helene (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C523S160000, C523S161000

Reexamination Certificate

active

10985368

ABSTRACT:
A water-in-oil emulsion ink comprises a water phase and an oil phase, wherein the water phase comprises a carbon black pigment having a pH of less than 8 dispersed therein by a water-soluble resin, and wherein the water phase also comprises a pH-adjusting agent to achieve a pH value for the water phase of 8 or greater. The ink maintains stable rheology on ageing, and provides a stable and consistent ink detection signal even after periods of non-use.

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Derwent abstract of JP08/218023, Aug. 1996.

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