For Evaluating Mottle, Holdout and Porosity of Coated Paper
This testing ink provides a simple and rapid way of monitoring batch-to-batch variations in paper structure and porosity. Coated paper, being relatively high in holdout, requires a high penetration ink, such as TK-11, to obtain a sufficiently strong color and mottle pattern.
Test Procedure: Spread the ink on the paper to be tested using a spatula or drawdown applicator. After one minute remove the ink by first scraping off most of it with a straight edge, then wiping away the remainder carefully with a clean paper towel. The resultant test pattern is characterized visually for mottle and porosity.
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