Process for alleviating bleed in printed elements

US5555008A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• John L. Stoffel · San Diego, US
• Arthur C. Shor · Concordville, US
• Harry J. Spinelli · Wilmington, US
• Sheau-Hwa Ma · West Chester, US
• Howard Matrick · Newark, US
• Mark L. Choy · Escondido, US
• Loren E. Johnson · San Diego, US

Key dates

• Filing date: Apr 6, 1994
• Grant date: Sep 10, 1996
• Expiry date: Apr 6, 2014

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2/2107
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for alleviating bleed and improving color in printed elements comprises applying an anionic printing liquid and a cationic printing liquid to a substrate adjacent to one another, wherein at least one of the printing liquids contains a polymer and reacting the anionic and cationic printing liquids with one another; wherein the color integrity of the anionic and cationic printing liquids is maintained.