US Patent No. 9,227,452

RECORDING MEDIUM


Patent No. 9,227,452
Issue Date January 05, 2016 
Title Recording Medium
Inventorship Isamu Oguri, Yokohama (JP)
Hisao Kamo, Ushiku (JP)
Tetsuro Noguchi, Hachioji (JP)
Shinya Yumoto, Kawasaki (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 9,227,452

1. A recording medium, comprising: a base and an ink receiving layer, wherein
the ink receiving layer contains a colloidal silica, a zirconium compound, an ammonium salt, and a hydroxycarboxylic acid,
and

90% or more of the colloidal silica contained in the ink receiving layer exists in a region of 0 nm or more and 300 nm or
less in a depth direction from an outermost surface of the recording medium.