US 7,744,959 B2 · Ink-jet recording medium for dye- or pigment-based ink-jet inks

Abstract

The present invention is drawn to a method of preparing a porous media substrate, comprising combining metal or semi-metal oxide particulates with a polymeric binder, wherein the metal or semi-metal oxide particulates are associated with at least one water soluble coating formulation additive. At least a portion of the water soluble coating formulation additive i) is in the form of unreacted additive, or ii) generates undesired electrolytes. Additional steps include removing at least a portion of the unreacted additive or undesired electrolytes, either before or after combining the metal or semi-metal oxide particulates with the polymeric binder, thereby forming a refined coating composition; and applying the refined coating composition to a media substrate to form an ink-receiving layer having a porous surface.

Claims18

Dependent claims

A method of preparing a porous media substrate, comprising:

forming an aqueous dispersion comprising at least one water soluble coating formulation additive comprising aluminum chlorohydrate;
adding 30-100 nm silica or alumina particulates to said additive dispersion, to form a dispersion comprising unflocculated silica or alumina particulates associated with said additive, and comprising unreacted additive or undesired electrolytes;
combining a polymeric binder with said additive-associated silica or alumina particulates;
removing at least 25-75% of the unreacted additive or undesired electrolytes;
and
applying a refined coating composition comprising said additive-associated metal or semi-metal oxide particulates and said binder to a media substrate to form an ink-receiving layer having a glossy porous surface and enhanced compatibility with inkjet ink components.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/122,971Filed 19 May 2008 · continuation

Priority

26 May 2004

Published

US 2008/0220239 A111 Sep 2008

Granted

29 Jun 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

B41M 5/52
Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording:…
B41M 5/506
Characterised by structural details, e.g. multilayer materials: intermediate layers
B41M 5/508
Characterised by structural details, e.g. multilayer materials: supports
B41M 5/5218
Macromolecular coatings: characterised by inorganic additives, e.g. pigments, clays

Family

Application10/854,350Parent of this continuation-in-part · filed 26 May 2004

Application11/110,106Parent of this continuation · filed 19 Apr 2005

US 2008/0220239 A1Pre-grant publication · published 11 Sep 2008

Application11/110,106Parent of this continuation-in-part

US 2005/0266180 A1Published application

US 2005/0266181 A1Published application

US 7,744,959 B2This patent

From the US filing history. Foreign family members aren’t listed.

Ink-jet recording medium for dye- or pigment-based ink-jet inks

Life of this patent

Ink-jet recording medium for dye- or pigment-based ink-jet inks

Life of this patent

Abstract

Claims18