- V -
Vehicles
The liquid component of a printing ink which acts as a carrier for the pigment.
Viscometer
Instrument used to measure the viscosity of an ink, varnish or other solution.
Viscosity
A broad term encompassing the properties of tack and flow of a liquid, usually ink.
- W -
Washout See Processing.
Water cooled Method frequently used to maintain temperature control of the central impression cylinder (also known as bull drum) in a CI Flexographic printing press. Tight temperature and web support are the keys to the CI press’ ability to maintain tight register on large webs or with thin film substrates.
Wavelength A quantitative specification of radiant energy. Mathematically, the speed of light divided by the frequency.
Web The paper, foil, film or other flexible material, from a roll, as it moves through the machine in the process of being formed or in the process of being converted, printed, etc.
- Y -
Yellow
One of the subtractive primaries the hue of which is used for one of the 4-colour process inks. It reflects red and green light and absorbs blue light.
- Z -
Zahn cup
A device for measuring the viscosity of ink in a flexo press room.
