Symuler Brilliant Carmine 6B 306 4B acid.Ca 5281-04-9 Dainippon Ink and Chemicals, Incorporated (DIC) Color pigment & dye Inks INKS >> Lithographic and Offset Inks INKS >> Gravure 4B acid. Ca. Easily dispersible, good rheology for oil ink, opaque type. Used in offset and gravure inks. 4B acid. Ca. Easily dispersible, good rheology for oil ink, opaque type. Used in offset and gravure inks.