Mizusawa Industrial Chemicals, Ltd.

Maso Takahashi

Masahide Ogawa

Teiji Sato

Kinichi Ono

Toshio Kitsu

Seikichi Takahashi

Disclosed is a filler for ink jet recording paper, said filler being composed of amorphous silica having a median diameter, measured by the coulter counter method, of 2 to 15 .mu.m, an oil absorption of at least 180 ml/100 g, a refractive index, measured by the solvent method, of at least 1.450, and a moisture absorption, measured when it is caused to absorb moisture for 200 hours at a relative humidity of 90% and a temperature of 25.degree. C., of at least 35%.

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Shiunji, Japan

Maso Takahashi