“…Possible ink bleeding or migrations were easily identifiable. Nine inks were tested: ferrogallic ink, 12 Waterman blue ink, Waterman green ink, Artline black marker ink, Artline red marker ink, Bic black ink, Bic blue ink, Bic red ink and Bic green ink. To control the stability of printing inks, color charts from Canson Pop'set paper range were used.…”