Security document printing ink

USRE34389E · kind E · reissue

Assignee

• SICPA HOLDING SA · CH

Inventors

• Albert Amon · Lausanne, CH
• Anton Bleikolm · Ecublens, CH
• Pierre Degott · Crissier, CH
• Olivier Rozumek · Bulle, CH
• Haim Bretler · Lausanne, CH

Key dates

• Filing date: Sep 14, 1992
• Grant date: Sep 28, 1993
• Expiry date: Sep 14, 2012

Classification

• Technology area (CPC —): General

Abstract

A printing ink for the printing of security documents by the method of engraved steel die printing, wherein the volatile solvents comprise at most 15%, referred to the total weight of the ink, of one or more volatile organic substances, and wherein the volatile matter may further contain water. These inks reply to the new environmental requirements and have still a better wipability on the printing cylinders or plates. They allow document printing without interleaving.