| abstract |
The present invention relates to the field of low energy radical curable inks for offset or letterpress printing of security documents. In particular, the present invention is a low energy radical curable offset or letterpress ink for offset or letterpress printing on substrates or security documents in the range of about 2.5 to about 25 Pa · s at 40 ° C. and 1000 s −1. Radically curable (meth) acrylate compound, one or more photoinitiators of formula (I), one or more machine-readable materials, and one or more fillers and / or extenders having a viscosity of Energy radical curable offset or letterpress inks containing an agent. [Selection diagram] None |