Newsink

A type of printing ink used for printing on newsprint. Like newsprint, which is an inexpensive, low-quality paper made from groundwood pulp, newsink in turn is an inexpensive ink produced from low-cost raw materials, primarily mineral oils and Carbon Black. Newsprint has a high degree of ink absorbency, and the high speed of web offset presses makes rapid vehicle absorption necessary to prevent smudging and ink setoff. Newsink, then, has a highly fluid body and low viscosity which allows for quick absorption. The addition of resins to the ink also helps reduce the capacity for smudging. Ink that is too fluid or oily, however, can soak through the paper producing ink strike-through. Newsink is also specially formulated for letterpress printing, although very little newspaper printing is done on letterpress machines any longer.

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