Pigmented ink composition

Details Pigmented ink composition Pigmented ink composition

2008-07-22

2008-07-22

McClendon, Sanza L (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S161000, C524S437000, C524S423000, C524S395000, C524S556000, C524S555000, C106S031130, C106S031250, C106S031260, C106S031600

Reexamination Certificate

active

07402614

ABSTRACT:
Re-dispersible pigmented printing ink compositions, preferably for the continuous ink jet printing process are obtained by the addition of a flocculating agent to the pigment dispersion in the printing liquid. The compositions do not form hard sediments and are easy to re-disperse on stopping and resuming the printing operations. Suitable flocculating agents bind the pigment particles in the sediment into three-dimensional “airy” structures, which are easy to break up. The ink compositions of the invention are furthermore characterized by a good printability in the dispersed state.

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