Patent ID: 9440474
Filing Date: 2016-09-13
CPC Classification: B41M

Claim Text:
1. A recording medium comprising in this order: a substrate; a first ink receiving layer containing a first inorganic pigment, polyvinyl alcohol, and a boric acid compound, the first inorganic pigment containing at least one inorganic pigment selected from the group consisting of alumina, hydrated alumina and fumed silica; and a second ink receiving layer acting as an outermost layer containing fumed silica as a second inorganic pigment, particles having an average particle size in the range of 1.0 μm to 20.0 μm, polyvinyl alcohol, and boric acid compound; wherein the boric acid compound content in the first ink receiving layer is in the range of 2.0 parts by mass to 7.0 parts by mass relative to 100 parts by mass of the polyvinyl alcohol in the first ink receiving layer, and the boric acid compound content in the second ink receiving layer is in the range of 10.0 parts by mass to 30.0 parts by mass relative to 100 parts by mass of the polyvinyl alcohol in the second ink receiving layer, wherein the content of the particles having an average particle size in the range of 1.0 μm to 20.0 μm in the second ink receiving layer is in the range of 0.5 part by mass to 5.0 parts by mass relative to 100 parts by mass of the second inorganic pigment, and wherein the first ink receiving layer has a thickness in the range of 10.0 μm to 40.0 μm.