US Patent 7700169 Recording sheet for ink jet printing

A recording sheet for ink jet printing is described, which consists of a paper support having coated on the front side of the support at least one ink-receiving layer consisting of fumed silicon dioxide with a positively charged surface and at least one binder, wherein at least one polyolefin layer is coated at the back side of said support and where there is no polyolefin layer between said paper support and the ink-receiving layer. Preferred is a recording sheet, wherein the surface of the fumed silicon dioxide has been modified by a treatment with the reaction products of a compound of trivalent aluminum with at least one aminoorganosilane.