Patent ID: 8425728
Filing Date: 2013-04-23
Classification: B41M

Abstract:
1. A print medium for high speed, digital inkjet printing comprising: a base paper formed from a fiber furnish containing at least 30% by weight of mechanical pulp; and a coating layer formed on at least one surface of the base paper, said coating layer comprising: a metallic salt; a first binder, a second binder; and at least one inorganic pigment, wherein the first binder is a water-soluble binder selected from the group consisting of casein, soy protein, polysaccharides, cellulose ethers, alginates, virgin and modified starches, polyvinyl alcohol and polyvinyl pyrrolidone, the second binder is selected from the group consisting of polymeric latexes with T the ratio of the first binder to the second binder, in dry weight, is 6:1 to 200:1, said at least one inorganic pigment is selected from the group consisting of ground calcium carbonate (GCC), and precipitated calcium carbonate (PCC), and wherein said print medium has a porosity value ranging from 15 to 40 Sheffield units.