A media sheet having a treated silica particulate-containing coating, comprising:a) a porous coating composition, including:(i) treated silica particulates being surface-activated by a surface activating agent selected from the group consisting of an aluminium chloride hydrate, a trivalent metal oxide, a tetravalent metal oxide, and combinations thereof, said treated silica particulates also being reagent-modified by an organosilane reagent, and(ii) a binder admixed with the treated silica particulates; andb) a media substrate having the porous coating composition coated thereon.
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