High resolution pigment ink for impulse ink jet printing

Details High resolution pigment ink for impulse ink jet printing High resolution pigment ink for impulse ink jet printing

C - Chemistry, Metallurgy

09

D

C09D 11/10 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2281234

Impulse ink jet compositions are provided which are suitable for printing clear, well-defined alphanumeric text or low spread, narrow bar width bar codes on porous substrates such as Kraft paper or corrugated cardboard. In one embodiment, the ink compositions preferably comprise from about 20 to 50 percent by weight of a carbon black dispersion, from about 10 to 20 percent by weight of a dispersion medium, from about 40 to 60 percent by weight of a plasticizer and optionally an antioxidant additive. The antioxidant additive lowers the dissolved oxygen level in the ink, thereby enhancing the jetting performance of the printhead.

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