the coatings being directly on the base material, i.e. below impression transfer material; Ink ribbons having base material impregnated with material other than impression material

Full Title

Ink ribbons; Renovating or testing ink ribbons > Ink ribbons having coatings other than impression-material coatings > the coatings being directly on the base material, i.e. below impression transfer material; Ink ribbons having base material impregnated with material other than impression material