Glossary of UV Technical Terms
This page explains some of the commonly used terms in the field of UV curing technology. If you would like any of this information explained in further detail, please don’t hesitate to contact us.
See electric arc.
A sealed quartz tube filled with a gas which separates two electrodes. An electric arc is struck between the two electrodes which ionises the gas and generates high intensity UV radiation.
A chemical reaction initiated by the exposure of a photoinitiator compound to UV radiation. When this takes place in a liquid ink or coating, it transforms to a solid state as a cross-linked polymer network.
An electric current passing through a normally non-conductive medium such as a gas, causing an electrical breakdown of the gas and an ongoing plasma discharge.
The band of the electromagnetic spectrum ranging from 700 nm to 1 mm.
Abbreviation of infrared.
In the context of printing and coating, this refers to the use of infrared radiation to excite and evaporate the water or solvent molecules in conventional inks (typically about 40% of the volume), leaving a solid pigment residue on the substrate.
A mechanical shield that closes over the UV lamp when the printing or coating machine is stopped. Arc UV lamps cannot be restarted for a while after they are switched off, so the lamp power is reduced and shutters are instead used to prevent UV and heat radiation from reaching the substrate.
The band of the electromagnetic radiation spectrum ranging from 10 nm to 400 nm. For further details please click here.
Abbreviation of ultraviolet.
See UV lamp.
See UV curing.
An ink which solidifies of ‘cures’ on exposure to UV radiation. Unlike conventional inks, UV inks do not require IR drying, as they do not contain any solvents.
The region of the electromagnetic spectrum in the ultraviolet range.
Printing with UV ink as opposed to conventional solvent- or water-based inks.
A wave of electromagnetic radiation in the ultraviolet range.
See UV lamp.
A clear coating applied to printed material and cured using UV light to create a glossy finish. UV varnishing is also used to finish digitally printed images to improve appearance and ink adhesion to the substrate.
For more information on the technology and application of UV curing, you may wish to visit here.