Patent ID: 6969445

Claim:
An ink jet recording paper which comprises a neutral base paper comprising a wood pulp as a starting material on which is coated a coating solution consisting essentially of a diaminostilbene-disulfonic acid derivative (A) as a fluorescent brightening agent, a binder consisting of a water-soluble binder and water, and a graft copolymer of polyvinyl alcohol and polydiallyldimethyl-ammonium chloride (B) as a cationic polymer fixing agent, a mixing ratio A:B in solid coating amount being within the range of 1:6â€“2:3, said coated paper having an ISO brightness of not less than 95% and a fluorescence intensity of 7â€“15% measured by a method specified in JIS P-8148 using a xenon flash lamp as a light source.