Abstract: This invention relates to an ultra opaque coated sheet, characterized by the fact that it comprises a colored support made from a single ply of material, the said support being coated on at least one of its faces with one or more white pigmented coats. This invention also relates to the manufacturing process of this ultra opaque coated sheet.

Abstract: The invention concerns a coated paper printable with offset printing using conventional offset inks drying in ambient air comprising, on at least one of its surfaces, a printable surface consisting of a pigmented composition consisting of at least one binder and pigments, including silica pigments in an amount ranging between 0.1 and 15% of the total dry weight of the composition. The invention also concerns the use of said coated paper in an offset printing process using conventional offset inks drying in ambient air, with a drying time of said inks less than 40 minutes after printing.

Abstract: This invention relates to an ultra opaque coated sheet, characterised by the fact that it comprises a coloured support made from a single ply of material, the said support being coated on at least one of its faces with one or more white pigmented coats. This invention also relates to the manufacturing process of this ultra opaque coated sheet.

Abstract: The present invention relates to a method of manufacturing a coated paper having at least one mark resembling a watermark, the method being characterized in that said mark is made after the drying step which follows the last coating operation, by performing steps in which: a) a re-wetting solution is applied to at least one face of the coated paper, in one or more determined zones; and b) pressure and heat are applied in said re-wetted zone(s) of the coated paper so as to evaporate said solution and densify the coated paper in said zone(s) relative to the remainder of the paper. The present invention also provides a coated paper including at least one mark resembling a watermark, characterized in that one or more determined zones of the coated paper present a reduction in thickness relative to the remainder of the coated paper, the density per unit area in said zone(s) of the coated paper being identical to that in the remainder of the paper.

Abstract: Paper coated on at least one side with a pigmented layer, the dry weight of the layer per side being at least 12 g/m.sup.2. The sheet's surface resistivity is less than or equal to 10.sup.11 ohms at 50% relative humidity measured according to the ASTM D257-66 standard.