Patent ID: 8609209

Claim:
An ink jet recording medium comprising a substrate and an ink receiving layer provided on the substrate and composed of two or more layers of at least an upper layer and a lower layer, wherein the ink receiving layer composed of the two or more layers contains polyvinyl alcohol in an amount of 12.7% by mass or more based on the total mass of the ink receiving layer composed of the two or more layers, wherein the upper layer (i) is a layer that is most distant from the substrate in the ink receiving layer composed of the two or more layers, (ii) contains a pigment and polyvinyl alcohol, the pigment containing 90% by mass or more of alumina hydrate, and (iii) has a layer thickness of 3.0 μm or more and 10.0 μm or less, and wherein the lower layer (i) is a layer underneath the upper layer, (ii) contains a pigment and polyvinyl alcohol, the pigment containing 20% by mass or more of silica, and (iii) has a layer thickness 2.5 times or more and 10 times or less larger than that of the upper layer and an average pore radius 0.90 times or more and 1.30 times or less larger than that of the upper layer.