Process for preparing a fabric in natural, artificial or synthetic fibre, preferably natural and/or artificial fibre, more preferably a cotton or viscose cloth for bookbinding, with gloss/bright or matt finish, suitable for being printed directly by digital printing, preferably HP INDIGO digital printing, said process comprising the steps of A) preparing an unfinished fabric or a cloth for bookbinding by desizing, washing, treating with optical white, sizing and drying; B) pre-treating the fabric or the cloth obtained from step A) by applying, on at least one of the two sides, at least one composition in the form of a first paste for the closure of the pores of said cloth/fabric so as to make the surface planar; C) on the side of said fabric or cloth intended to be printed, applying by coating a layer of a second paste having a viscosity of at least 7500 cps, preferably comprised between 8000 and 12000 cps, and drying this layer to obtain a layer highly receptive to the liquid ink of digital printers; said viscosity being measured at the ambient working temperature when the paste is applied, generally between 10°C and 30°C, said second paste being a mixture consisting of - at least one nonionic thickener, preferably of the polyurethane type, and - at least one aqueous composition containing about 35% by weight as dry weight of an acrylic resin and components that at temperatures around 200°C for less than one minute initiate the state of polymerization/vulcanization, and - optional additives; said second paste not containing colorant for fibres and inorganic/organic pigment such as for example calcium carbonate, clay, zeolite, silica; and D) calendering at ambient temperature the cloth obtained from step C). A) preparing an unfinished fabric or a cloth for bookbinding by desizing, washing, treating with optical white, sizing and drying; B) pre-treating the fabric or the cloth obtained from step A) by applying, on at least one of the two sides, at least one composition in the form of a first paste for the closure of the pores of said cloth/fabric so as to make the surface planar; C) on the side of said fabric or cloth intended to be printed, applying by coating a layer of a second paste having a viscosity of at least 7500 cps, preferably comprised between 8000 and 12000 cps, and drying this layer to obtain a layer highly receptive to the liquid ink of digital printers; said viscosity being measured at the ambient working temperature when the paste is applied, generally between 10°C and 30°C, said second paste being a mixture consisting of - at least one nonionic thickener, preferably of the polyurethane type, and - at least one aqueous composition containing about 35% by weight as dry weight of an acrylic resin and components that at temperatures around 200°C for less than one minute initiate the state of polymerization/vulcanization, and - optional additives; said second paste not containing colorant for fibres and inorganic/organic pigment such as for example calcium carbonate, clay, zeolite, silica; and - at least one nonionic thickener, preferably of the polyurethane type, and - at least one aqueous composition containing about 35% by weight as dry weight of an acrylic resin and components that at temperatures around 200°C for less than one minute initiate the state of polymerization/vulcanization, and - optional additives; D) calendering at ambient temperature the cloth obtained from step C).