ABSTRACT
Since the beginning of papermaking in Western Europe, gelatin was used to reduce the sorption of water (paper sizing) by papers to improve the buffer effect and feathering of the inks [1]. Nowadays, papers are sized with synthetic sizes such as alkyl ketene dimers (AKDs) and alkenyl succinic anhydrides (ASAs), which were developed for the paper industry in 1953 and 1974, respectively [2], but gelatin sizing continues to be used for artist quality papers.
