PRINTING PAPERS SEPARATION OF INK CONSTITUENTS DURING INK SETTING ON COATED SUBSTRATES

摘要

The absorption of ink oils (mineral oil, vegetable oil and triglyceride) into the coating of various substrates after offset printing has been studied by chemical analysis. A vegetable-oil ink and a mineral-oil ink were used in combination with two coated fine papers and one coated board. The absorption was fast during the first minutes and continued for many hours but at a lower rate. The initial absorption increased in the order triglyceride