Flint Ink Corporation, Ann Arbor, MI, and the SICPA Group, Lausanne, Switzerland have reportedly agreed in principle to several business transactions by which Flint Ink will acquire SICPA’s worldwide heatset and coldset inks business and SICPA will acquire Flint Ink’s worldwide security inks business, that is, inks used for printing currency, stamps and other negotiable instruments.      Flint Ink and SICPA expect to finalize definitive agreements on the terms of the transactions by the end of...