Offset printing method

Abstract

Abstract PURPOSE:To enhance productivity, safety and dimensional accuracy of a printed matter, by using an electron-curing printing ink containing a methacrylate derivative, and heating a printed surface during radiation of electron beams after printed. CONSTITUTION:A plastic film is printed with use of an electron-curing printing ink containing a methacryloyl radical-contng. compound unirritant to a skin (e.g. polyester methacrylate methylmethacrylate) and a dyestuff or a pigment. A printed surface is heated at 50-150 deg.C during radiation of electron beams, to cure the ink with a low absorption dose. Consequently, the printed matter is completely cured even with the radiation of electron beams of 10Mrad or less, and the printed matter is continuously coiled after the radiation of electron beams. Thus, productivity is enhanced, and air pollution is inhibited owing to the use of a solvent-free ink.

Inventors

• 👤 Mitsuharu Nakamoto
• 👤 Koichi Yoshida

Bibliographic Details