A numerical study of the ink transfer processes that occur
during micro-gravure-offset printing is carried out. Specifically,
liquid transfer between two parallel separating plates and
between a trapezoidal cavity and an upward moving plate are
simulated, as models of the printing of ink from the offset pad
onto the substrate and the picking up of ink from the gravure
plate by the offset pad, respectively. The influences of the
separation velocity, liquid viscosity, surface tension, gravity
force, and contact angles on the liquid transfer are estimated.
Keywords: Contact angle, Ink transfer, Gravure-offset printing