COATING FOR TREATING SUBSTRATES FOR INK JET PRINTING INCLUDING IMBIBING SOLUTION FOR ENHANCED IMAGE VISUALIZATION AND RETENTION, METHOD FOR TREATING SAID SUBSTRATES, AND ARTICLES PRODUCED THEREFROM

摘要

An aqueous coating formulation containing solids, for enhancing image visualization and retention of acid dye-based inks includes a cationic polym er or copolymer, a fabric softener, urea, and ammonium salts of multifunctional weak acids. Desirably the ammonium salts are selected from the group consisting of ammonium oxalate and ammonium tartrate.