Aqueous ink compositions containing anti-curl agents

US5356464A · kind A · utility

Assignee

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

Inventors

• Mark Hickman · Silver Spring, US
• Loren E. Johnson · San Diego, US
• John L. Stoffel · San Diego, US
• Ronald A. Askeland · San Diego, US
• Catherine B. Hunt · San Diego, US
• Howard Matrick · Newark, US
• Keshava A. Prasad · San Marcos, US
• John T. Rich · Lebanon, US
• Leonard Slevin · San Diego, US
• John R. Moffatt · Corvallis, US

Key dates

• Filing date: Dec 1, 1993
• Grant date: Oct 18, 1994
• Expiry date: Dec 1, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous ink compositions containing anti-curl agents substantially reduce or eliminate paper curl in plain-paper printed elements without adversely effecting storage stability, decap properties or print quality, and thus eliminate the need for expensive and bulky mechanical curl-arresting devices or special curl-resistant substrates. Printing the inks on plain-paper substrates is the sole step in a process for reducing paper curl in plain-paper printed elements.