Patent ID: 7662452
Filing Date: 2010-02-16
Classification: B41M

Abstract:
1. An ink recording medium comprising: an ink-receiving layer constituting a recording surface and containing a pigment for holding a colorant of an ink; a binder for said pigment; and a colorant deterioration preventing agent, wherein said ink-receiving layer includes, within a range of 30 Φm in a direction of depth from the recording surface, a high concentration portion in which the concentration of said colorant deterioration preventing agent is relatively high and a low concentration portion in which the concentration of said colorant deterioration preventing agent is relatively low, and said colorant deterioration preventing agent has a concentration distribution continuously decreasing in the direction of depth from the recording surface from said high concentration portion to said low concentration portion, wherein said colorant deterioration preventing agent is a gas deterioration preventing agent, wherein said colorant deterioration preventing agent contained in said ink-receiving layer has a concentration in a maximum concentration portion of 1.5 times or higher of a concentration in a minimum concentration portion, wherein said binder is crosslinked, and wherein the crosslinking of said binder progresses with increasing depth from the recording surface of said ink-receiving layer.