DRUKGEVOELIG REGISTRATIEMATERIAAL EN WERKWIJZE VOOR HET VERVAARDIGEN VAN PAPIER DAT DIT DRUKGEVOELIG REGISTRATIEMATERIAAL BEVAT.

摘要

In a pressure sensitive recording paper which comprises in combination: a dyestuff precursor or dyestuff precursor solution and a dyestuff acceptor composition which is capable of color formation by reaction with said dyestuff precursor, the dyestuff acceptor consists essentially of a polyvalent metal salt of 3-position-substituted salicylic acid derivatives having at least 12, preferably at least 19 carbon atoms.