Rheological properties, especially viscosity and lack, of three types
of offset inks (sheetfed, UV-curable and waterless inks) were investig
ated. In particular, the study of the influence of the temperature on
these characteristics is very interesting. Consequently, some specific
properties of waterless inks are pointed out. Moreover, the effect of
a rheology modifier (a ''hardener'') on the properties of a conventio
nal offset ink was measured.