Howard Matrick

US Patent:

53564642, Oct 18, 1994

Filed:

Dec 1, 1993

Appl. No.:

8/160703

Inventors:

Mark S. Hickman - Vancouver WA
Loren E. Johnson - Corvallis OR
John L. Stoffel - San Diego CA
Ronald A. Askeland - San Diego CA
Catherine B. Hunt - San Diego CA
Howard Matrick - Hurleyville NY
Keshava A. Prasad - San Diego CA
John T. Rich - San Diego CA
Leonard Slevin - San Diego CA
John R. Moffatt - Corvallis OR

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C09D 1102

US Classification:

106 20R

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.