Patent ID: 6630213
Filing Date: 2003-10-07
Classification: B41M,B82Y,C01B,C01F,C01P,Y10T

Abstract:
A recording medium comprising a substrate and an ink-receiving layer comprising a xerogel formed thereon, wherein in the ink-receiving layer, the total pore volume of pores with radii of from 0.7 to 100 nm as measured by a nitrogen adsorption/desorption method, is at least 0.8 cm3/g, and the average pore radius as defined by a radius corresponding to a pore volume of Â½ of the pore volume of pores with radii of from 0.7 to 100 nm in a cumulative pore volume distribution curve obtained by a BJH method from a nitrogen desorption isothermal line, is at least 14 nm, wherein the xerogel is obtained by removing the solvent from a silica-alumina composite sol obtained by reaction of an acidic aluminum salt and a silica hydrogel, and wherein the reaction is carried out by adding the acidic aluminum salt in an amount of from 1 to 40 g as Al2O3 per 100 g of SiO2 component in silica hydrogel.