PURPOSE: To obtain a photographic printing paper adaptable to development processing, good in writability, and having a reverse coated layer, by providing a gelatin layer contg. an inorganic pigment and a hardening agent on the reverse side of a water-proof photographic printing paper.
CONSTITUTION: A gelatin layer applied to the reverse side of a waterproof photographic printing paper coated with polyolefin, such as polyethylene, on both sides of th paper contains an inorganic pigment, such as silica, and a hardening agent selected from a group of activated vinyl, activated halogen, activated ester, epoxy, methanesuofonate, carbondiimide, isooxazole, isocyanate, and inorganic types, e.g., 2,4-dichloro-6-hydroxy-S-triazine sodium salt. This gelatin layer causes no peeling and no dissolution during development processing, having favorable processing adaptability as well as retaining proper whiteness after development, and having good writability with every writing utensil.
KITAGAWA KEIJI
FUCHIZAWA TETSUO
