A method of manufacturing a paper or paperboard with improved printing properties, which method comprises the steps of, providing a paper or paperboard substrate, comprising cellulosic fibres, providing a coating composition comprising a mixture of an esterified or etherified starch and a inorganic mineral; and coating at least one surface of said substrate with at least one layer of said coating composition.

The present disclosure is drawn to embossed print media including a media substrate having a front side and a back side, an embossed image-receiving layer formed on the front side of the media substrate at a coating weight of 3 gsm to 50 gsm, and a fabric liner coupled to the back side of media substrate via an adhesive layer. The embossed image-receiving layer can include a first pigment filler and a first polymeric binder. The adhesive layer can be applied at a coating weight from 20 gsm to 40 gsm and can include a second polymeric binder and a flame-retarding filler.

A pigmented aqueous inkjet ink set for manufacturing decorative panels includes a cyan aqueous inkjet ink containing a copper phthalocyanine pigment; a red aqueous inkjet ink containing a red pigment selected from the group consisting of C.I. Pigment Red 254, C.I. Pigment Red 122, C.I. Pigment Red 176 and mixed crystals thereof; a yellow aqueous inkjet ink containing a pigment C.I Pigment Yellow 150 or a mixed crystal thereof; and a black aqueous inkjet ink containing a carbon black pigment, wherein the aqueous inkjet inks contain a surfactant. An inkjet printing method for manufacturing decorative panels is also disclosed.

The recording medium according to the present invention includes a substrate, an ink receiving layer (1), and an ink receiving layer (2) arranged on the outermost surface. The ink receiving layer (2) has a thickness of 10 nm or more and 4000 nm or less. The ink receiving layer (1) contains a first inorganic particle and a first binder, and the ink receiving layer (2) contains a second inorganic particle and a second binder. The first binder and the second binder are each a water-insoluble resin. The contact angle θ1 formed between water and a surface of the ink receiving layer (1) is 90° or more, and the contact angle θ2 formed between water and the surface of the ink receiving layer (2) is 60° or more and 85° or less.

The recording medium includes: an absorbent substrate; and an ink receiving layer provided on the absorbent substrate. The dry coating amount of the ink receiving layer is 6.0 g/m.sup.2 or more to 11.0 g/m.sup.2 or less, arithmetic average roughness Ra1 (μm) of a surface of the absorbent substrate satisfies a relationship of Expression (1) below, arithmetic average roughness Ra1 and arithmetic average roughness Ra2 (μm) of a surface of the ink receiving layer satisfy a relationship of Expression (2) below, and an average length RSm1 (mm) of a roughness curve element of the surface of the absorbent substrate and an average length RSm2 (mm) of a roughness curve element of the surface of the ink receiving layer satisfy a relationship of Expression (3) below.

Ra1≥5.0 μm  (1)

Ra2/Ra1≥0.87  (2)

RSm2/RSm1≤1.40  (3)

The invention relates to a transfer paper for transferring images onto substrates, comprising a carrier having a wax coating; a layer (A) arranged thereon, containing a wax emulsion, a binding agent, an inorganic crystalline substance, and a pigment; a layer (B) arranged on layer (A), containing an organic polymer, an inorganic crystalline substance, a fixing agent, a copolymer and a pigment; and a layer (C) arranged on layer (B), containing an organic polymer, a binding agent, an inorganic crystalline substance, a wax emulsion, a copolymer and a pigment. The invention also relates to a method for transferring images onto substrates using the transfer paper.

A pre-treatment coating composition includes evaporable liquid vehicle and a pre-treatment coating matrix, including from 30 wt % to 70 wt % multivalent organic salt, from 5 wt % to 30 wt % dispersed polyurethane binder having a weight average molecular weight from 30,000 Mw to 100,000 Mw, from 0.5 wt % to 8 wt % of a high molecular weight polyvinyl alcohol binder, and from 10 wt % to 30 wt % of a low molecular weight polyvinyl alcohol binder. The low molecular weight polyvinyl alcohol binder and the high molecular weight polyvinyl alcohol binder are present in the pre-treatment coating matrix at a 3:1 to 15:1 weight ratio, and weight percentages are based on dry weight of the pre-treatment coating matrix.

The present disclosure is drawn to primer compositions, which can include a binder including polyvinyl alcohol, starch nanoparticles, and a crosslinkable polyurethane dispersion. The primer competitions can also include a cationic salt and water.

A multi-functional polyurethane coating composition can include water and polyurethane particles including a blend of polyurethane polymers with polyurethane backbones. The polyurethane particles can include multiple pendant groups independently attached to one or multiple polyurethane backbones within the blend of polyurethane polymers. The multiple pendant groups of the polyurethane particles include polyalkylene oxides, aliphatic phosphonium salts, and epoxides.

The present invention provides a coating material that can improve gravure printing characteristics of the printing surface of a printing substrate to favorably transfer an ink fed in the cell of a gravure printing roll to the printing surface of the printing substrate, thereby achieving the beautiful gravure printing. The coating material of the present invention is a coating material for forming a surface layer serving as a printing surface on a printing substrate to which gravure printing is to be applied, and the coating material is characterized by including a pigment including an inorganic particulate and a skin layer that is formed on a surface of the inorganic particulate and includes an organic compound.