Patent ID: 7955669
Filing Date: 2011-06-07
Classification: B41M,D21H

Abstract:
1. An ink jet recording medium comprising a substrate and an ink receiving layer which is provided on at least one surface of the substrate and contains inorganic fine particles having an average secondary particle size of 1 μm or more and 4 μm or less as measured by a Coulter counter method in an amount of 0.2 g/m 2 or more and 2.0 g/m 2 or less in terms of solid content mass, wherein the ink receiving layer satisfies the following conditions (1) to (3) with respect to a pore distribution curve as determined by a nitrogen adsorption method, (1) total pore volume in a pore size range of 10 nm or more and 30 nm or less is 0.25 ml/g or more, (2) total pore volume in a pore size range of 30 nm or more and 70 nm or less is 0.1 ml/g or more, and (3) volume ratio of the total pore volume in the pore size range of 10 nm or more and 30 nm or less to the total pore volume in the pore size range of 30 nm or more and 70 nm or less is within a range of from 1:0.4 to 1:1.