Patent ID: 6613419
Filing Date: 2003-09-02
Classification: B41M,Y10T

Abstract:
An ink jet recording sheet comprising a support having on at least one side of the support an ink absorbing layer, wherein the surface of the ink absorbing layer side of the sheet exhibits a center-line mean roughness (Ra) of 0.4 to 2.5 &mgr;m and a ten-point mean roughness (Rz) of 5Ã—Ra to 20Ã—Ra when measured at a reference length of 2.5 mm and a cut-off value of 0.8 mm, and wherein the ink absorbing layer is a porous coat containing voids and containing fine inorganic particles and a hydrophilic polymer in a ratio by weight of the inorganic particles to the hydrophilic polymer of 2 to 20.