Patent ID: 7510750

Claim:
A recording paper containing pulp fibers and filler as main components and containing in a surface of the recording paper at least one kind of heterocyclic carboxylic acid selected from the group consisting of coumarinic acid, pyrrolidone carboxylic acid, pyrrole carboxylic acid, and pyridine pentacarboxylic acid and a water-soluble polymer, wherein the surface also contains at least one kind of cationic substance selected from the group consisting of a cationic organic molecule and a metal salt containing a metal cation of valency two or greater, and the content per side of the cationic substance in the surface of the base paper is in a range of 0.1 to 3 g/m 2 in terms of solid content remaining, and the content per side of the heterocyclic carboxylic acid is in a range of 0.1 to 3 g/m 2 in terms of solid content remaining.