There are two different types of half-tone: Amplitude modulated rastering (AM): Resolution in a constant number of dots per area, the dot sizes are variable. Frequency modulated rastering (FM): The dots are as small as possible but the size is constant. The number of dots per area is variable.
Printing of in halftone dots converted continuous-tone images, consisting of individual raster dots.
Having an affinity for water and aqueous solutions.
Cannot be wetted by aqueous and other high surface tension fluids.