Patent ID: 8900678

Claim:
A coated medium for inkjet printing, comprising: a supporting substrate; and a coating layer formed on at least one side of the supporting substrate, the coating layer comprising: a first inorganic pigment of precipitated calcium carbonate with an average particle size of 400 nm or smaller, the first inorganic pigment being present in an amount ranging from about 10 parts to about 30 parts; a second inorganic pigment of silica with a surface area of greater than 100 m 2 /g, the silica being present in an amount ranging from about 40 parts to about 60 parts based on 100 parts of inorganic pigments in total; a third inorganic pigment with an average particle size greater than that of the first inorganic pigment, the third inorganic pigment being calcined clay having an average particle size ranging from 0.8 μm to 2 μm, the third inorganic pigment being present in an amount of about 30 parts based on 100 parts of inorganic pigments in total; and at least one binder; wherein the coated medium exhibits improved highlighter smear resistance measured in milli optical density units (mOD) compared to an other coated medium comprising a coating layer including the first inorganic pigment, the second inorganic pigment, and the third inorganic pigment, and wherein the second inorganic pigment of the coating layer of the other coated medium is present in an amount that is less than 40 parts based on 100 parts of inorganic pigments in the coating layer of the other coated medium in total.