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A method of coating paper with a paper coating composition having a solids concentration of at least 45% by weight, consisting essentially of an aqueous cationic dispersion of a particulate calcium carbonate pigment and a nonionic or cationic adhesive, wherein the pigment has a particle size distrib

A method of coating paper with a paper coating composition having a solids concentration of at least 45% by weight, consisting essentially of an aqueous cationic dispersion of a particulate calcium carbonate pigment and a nonionic or cationic adhesive, wherein the pigment has a particle size distribution such that no more than 1% by weight of the particles have an equivalent spherical diameter larger than 10 microns, at least 65% by weight of the particles have an equivalent spherical diameter smaller than 2 microns and not more than 10% by weight of the particles have an equivalent spherical diameter smaller than 0.25 micron, and wherein said pigment is dispersed with a combination of a cationic polyelectrolyte and an anionic polyelectrolyte, with the amount of cationic polyelectrolyte being in the range of about 0.01% to about 1.5% by weight, based on the weight of the dry pigment, and with the amount of anionic polyelectrolyte being in the range of about 0.01% to about 0.5% by weight.

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[ What is claimed is:] [1.] In a method of coating paper with a paper coating composition, the improvement which comprises applying a coating composition having a solids concentration of at least about 45% by weight, consisting essentially of an aqueous cationic dispersion of a particulate calcium c

[ What is claimed is:] [1.] In a method of coating paper with a paper coating composition, the improvement which comprises applying a coating composition having a solids concentration of at least about 45% by weight, consisting essentially of an aqueous cationic dispersion of a particulate calcium carbonate pigment and a nonionic or cationic adhesive, wherein the, pigment has a particle size distribution such that no more than 1% by weight of the particles have an equivalent spherical diameter larger than 10 microns, at least 65% by weight of the particles have an equivalent spherical diameter smaller than 2 microns and not more than 10% by weight of the particles have an equivalent spherical diameter smaller than 0.25 micron, and wherein said pigment is dispersed with a combination of a cationic polyelectrolyte and an anionic polyelectrolyte, with the amount of cationic polyelectrolyte being in the range of about 0.01% to about 1.5% by weight, based on the weight of the dry pigment, and with the amount of anionic polyelectrolyte being in the range of about 0.01% to about 0.5% by weight, said solids concentration, as determined at a given viscosity value as measured with a Brookfield viscometer at a temperature of about 22.degree. C. and at a spindle speed of about 100 rpm, being at least about 3 percentage units higher than that of an other paper coating composition which is identical to said paper coating composition except that in said other paper coating composition, the pigment has a particle size distribution such that no more than 1% by weight of the particles have an equivalent spherical diameter larger than 10 microns, at least 65% by weight of the particles have an equivalent spherical diameter smaller than 2 microns and more than 10% by weight of the particles have an equivalent spherical diameter smaller than 0.25 micron.