Hewlett-packard Development Company, L.p.

Bill Sperry

John L Stoffel, Jr

Hai Quang Tran

Yi-Hua Tsao

Christian Schmid

Richard J Mcmanus

Christian 16399 W Bernardo Drive Schmid

John L 16399 W Bernardo Drive Stoffel

Highlighter ink compositions can be prepared which provide improved abilities to reduce smear during highlighting. Highlighter ink compositions can include an acid buffer having a pKa from about 2 to about 6, a highlighter colorant, and a liquid vehicle. The image for highlighting can be formed on the substrate using any conventional printing technique, such as ink-jet printing or other printing techniques. Application of the highlighter ink compositions of the present invention to a printed image results in a reduced degree of image smear, particularly when the image was produced by an ink-jet printing process. Further, the acid buffer can be configured for reducing mobility of specific ink-jet colorants. In this way, the highlighter ink composition can be specifically tailored for reducing smear of various printed inks.

Ink compositions for use in highlighter markers and associated methods

Print media and methods of making print media are disclosed. One exemplary print medium, among others, includes a substrate having a fibrous component. In addition, a cationic guanidine polymer compound or salt thereof and a metallic salt are each disposed within the fibrous component of the substrate.

Print media and methods of making print media

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Poway, CA, United States of America

Bill Sperry