Glossy inkjet recording medium and methods therefor
A manufacturing an ink-receiving medium comprising the steps of providing a support, treating the support with a salt of a multivalent metal cation, and coating upon one or each side of the support at least one porous ink-receiving top layer from an aqueous coating composition consisting of non-cationic components, wherein the non-cationic components comprise a binder and anionic particles of average particle size less than 2.5 microns, wherein the ink-receiving top layer comprises at least 50% of the total solids by weight, such that the water-soluble salt of a multivalent metal cation is able to diffuse into the ink-receiving top layer, the method further comprising drying the coating and optionally calendering the coating. Also disclosed is inkjet media made from such method and a method of printing using such inkjet media.
1. An inkjet-receiving medium comprising:
(a) a support, which is optionally porous, comprising a water-soluble, essentially colorless, non-reactive salt of a multivalent metal cation on its surface and/or incorporated within a porous structure thereof; and
(b) on one or each side of the support at least one porous ink-receiving layer, including a porous ink-receiving top layer consisting essentially of non-cationic components and the same water-soluble salt of a multivalent metal cation that in substantial part has diffused into the porous ink-receiving top layer from the support, wherein the non-cationic components comprise binder and anionic particles of average particle size less than 2.5 micrometers, and wherein the anionic particles comprise at least 50 percent of the total solids by weight in the porous ink-receiving top layer.
2. A method of printing in which the inkjet-receiving medium of claim 1 is printed with an inkjet printer employing at least one pigment-based colorant in an aqueous ink composition wherein the pigment-based colorant is stabilized using anionic dispersants or is self-dispersed.
3. The printing method of claim 2 in which the inkjet printer is a continuous high-speed commercial inkjet printer and the inkjet printer applies colors from at least two different print heads in sequence in which different colored parts of an image printed on the inkjet-receiving medium are registered.