the substrate having an uneven surface, e.g. crêped or corrugated paper

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Coated paper (coated fibreboard D21J1/08); Coating material (recording sheets characterised by the coating used to improve ink, dye or pigment receptivity B41M5/50) > Coated paper characterised by the paper substrate > the substrate having an uneven surface, e.g. crêped or corrugated paper