International Paper Company

Kapil Mohan Singh

Yan C Huang

Yaoliang Hong

Dennis W Anderson

Michael F Koenig

Thomas R Arnson

David B Shelmidine

Peter Matthew Froass

Jay Cheng Song

William R Shields

Sen Yang

Krishna Kosaraju Mohan

Frederick P Karsa

Kosaraju Krishna Mohan

M Bruce Lyne

James F Suska

Jeff R Becker

Paul J Fosco

Alexander A Koukoulas

Timothy J Bradford

Benjamin Thomas Liguzinski

D W Anderson

Christopher Michael Wilson

Jingxiu Wan

Williams Shields

Phillip Norrdahl

Douglas L Hamilton

Jody MacDonald

Ronald A Stone

Dw Anderson

Tom Arnson

The present invention relates to a sizing composition that, when applied to paper substrate, creates a substrate, preferably suitable for inkjet printing, having increased print density, print sharpness, low HST, and/or image dry time, the substrate preferably having high brightness and reduced color-to-color bleed as well. In addition, the present invention relates to a method of reducing the HST of a paper substrate by applying the sizing composition to at least one surface thereof. Further, the application relates to methods of making and using the sizing composition, as well as methods of making and using the paper containing the sizing composition.

Paper substrate having enhanced print density

An article in the form of a printable substrate having a showthrough value of about 0.14 or less, and an opacity value of at least about 88% which includes a paper substrate with a first and second surfaces formed of paper fibers having a basis weight of from about 12 to about 32 lbs/1300 ft, and a substrate filler in an amount in the range of from 0 to about 30% by weight of the paper substrate; and a surface size layer on at least one of the first and second surfaces, the surface size layer having about 50 lbs or less per ton of the paper substrate of a starch surface sizing agent and a multivalent metal salt drying agent in an amount sufficient to impart to the at least one of the first and second surfaces a black print density value of at least about 0.8 when inkjet printed with pigmented inks and a waterfastness value of at least about 85% when inkjet printed with dye-based inks, the printable substrate having a MD tensile strength of at least about 12 lbs/in. and a CD tensile strength of at least about 6 lbs/in. Also, a method for preparing such a printable substrate.

Low basis weight inkjet printable substrates with lower showthrough and improved waterfastness and print density

This invention relates to a paper substrate containing high surface sizing and low internal sizing and having high dimensional stability, as well as methods of making and using the composition.

Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability

An article in the form of a paper substrate having a first surface and a second surface and an acid-resistant water-swellable substrate coating which provides an ink-receptive porous surface on at least one of the first and second surfaces. The substrate coating has an amount of an acid-resistant coating pigment sufficient to impart a Parker Print Smoothness value of at least about 4 to the at least one of the first and second surfaces and is dispersed in an acid-resistant water-swellable crosslinked polymer coating pigment binder matrix, with the coating pigment having from about 30 to 100% larger coating pigment particles with a mean particle size above about 1 micron in diameter. Also, a method for preparing such coated paper substrates.

Coated printable substrates resistant to acidic highlighters and printing solutions

The present invention relates to a sizing composition that, when applied to paper substrate, creates a substrate, preferably suitable for inkjet printing, having increased print density, enhanced print mottle, as well as print sharpness, low HST, and/or image dry time, the substrate preferably having high brightness and reduced color-to-color bleed as well. In addition, the present invention relates to a method of reducing the HST of a paper substrate by applying the sizing composition to at least one surface thereof. Further, the application relates to methods of making and using the sizing composition, as well as methods of making and using the paper containing the sizing composition.

Paper substrate containing a wetting agent and having improved print mottle

The present invention relates to a sizing composition that, when applied to paper substrate, creates a substrate, preferably suitable for inkjet printing, having increased print density, and print mottle, as well as print sharpness, low HST, and/or image dry time, the substrate preferably having high brightness and reduced color-to-color bleed as well. In addition, the present invention relates to a method of reducing the HST of a paper substrate by applying the sizing composition to at least one surface thereof. Further, the application relates to methods of making and using the sizing composition, as well as methods of making and using the paper containing the sizing composition.

Paper substrate containing a wetting agent and having improved printability

The present invention relates to a sizing or coating composition that, when applied to paper substrate, creates a substrate having improved waterfastness, surface strength, and surface strength as measured by resistance to abrasion. In addition, the present invention relates to paper substrates containing the composition, as well as methods of using and making the paper substrate and composition.

Recording sheet with improved image waterfastness, surface strength, and runnability

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.

Fast dry coated inkjet paper

The invention involves papers having either an internal starch or a size press applied starch and a boron-containing compound which is added in proportion to the starch and which is believed to interact with the starch to provide improved physical and mechanical properties in the paper. Method of forming the papers are also disclosed.

Papers having borate-based complexing and method of making same

The invention provides an apparatus and method for testing the tendency of a paper to curl. The paper is cut from a paper making machine and rapidly humidified to standard TAPPI conditions, and is thereafter run through an apparatus having a substantially vertically oriented nip. The paper is measured for curl, all data are tabulated and fed back into a data acquisition or paper machine control system.

Test to measure curling tendency of paper in laser printers

Growing community of inventors

West Chester, OH, United States of America

Kapil Mohan Singh