US 8,012,551 B2 · Fast dry coated inkjet paper

Abstract

Disclosed are a coating composition, coated article, and a method for treating one or more sides of the printable web with the composition, for providing improved printing ink dry time and gloss. The coating composition comprises: a calcium carbonate pigment component comprising a mixture high and low surface area calcium carbonate pigment; a metal salt drying agent; and a cationic dye fixing agent; a pigment binder; optionally a plastic pigment; and optionally an optical brightener; and which provides: a solids content of at least about 25%; a ratio of high to low surface area calcium carbonate in the range of from about 0.5:1 to about 20:1; and a ratio of calcium carbonate pigment component to pigment binder in the range of from about 4:1 to about 50:1.

Claims20

Dependent claims

An article comprising:

a printable web having first and second surfaces;
and
a coating on at least one of the first and second surfaces,
wherein the coating comprises:
a calcium carbonate pigment component comprising a mixture high and
low surface area calcium carbonate pigment;
a metal salt drying agent;
a cationic dye fixing agent;
and
a pigment binder;
wherein the coating has:
a ratio of high surface area calcium carbonate to low surface area calcium carbonate in the range of from about 0.5:1 to about 20:1;
and
a ratio of calcium carbonate pigment component to pigment binder in the range of from about 4:1 to about 50:1;
wherein the coating provides:
a printable web surface loading on each surface on which the coating is present in an amount of at least about 3 gsm.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/474,647Filed 29 May 2009 · us provisional application

Priority

29 May 2008

Published

US 2009/0297738 A13 Dec 2009

Granted

6 Sep 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 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:…
D21H 19/38
Coatings with pigments: characterised by the pigments
B41M 5/5218
Macromolecular coatings: characterised by inorganic additives, e.g. pigments, clays
B41M 5/5236
Macromolecular coatings: characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose

Fast dry coated inkjet paper

Life of this patent

Fast dry coated inkjet paper

Life of this patent

Abstract

Claims20