UV LED Curing Technology

How does UV LED Curing Technology Work?

Learn more about UV LED curing technology

UV LED Curing Technology

How does UV LED Curing Technology Work?

Since 2002, Phoseon pioneered UV LED curing technology for industrial curing applications worldwide. Phoseon’s patented technology provides maximum UV energy, superior performance, and long-term reliability. UV LED improves workplace safety through the elimination of harmful substances such as ozone and mercury. These light sources perform faster, safer, cleaner, and provide a longer-lasting solution for customers.

Phoseon has completed a large number of successful UV curing systems in printing, coatings and adhesive markets. Utilizing its patented technology and expertise in optics and thermal management, we provide customized solutions for customer’s tough curing challenges.

UV curing is a photopolymerization process that uses UV energy to change a formulation of non-crosslinked solids into a crosslinked solid. Upon absorption of the UV energy, photoinitiators produce free radicals that initiate cross-linking with monomers and oligomers. This creates a reaction that cures or solidifies the ink, coating or adhesive. UV formulations incorporate various additives such as stabilizers, wetting agents, adhesion promoters, defoamers, and pigments. This provides the needed formulation characteristics to successfully apply the material and produce the desired color.

UV LED improves on the conventional processes by enabling the technology to be used with thinner, heat- sensitive substrates and constructions as well as sensitive electronics and assemblies. It simultaneously reduces byproducts such as ozone and improving workplace safety through the elimination of UV-B and UV-C wavelengths.

SLM and Technologies

Semiconductor Light Matrix™ Technology

Phoseon has developed a UV LED energy source that provides maximum UV energy, superior performance, and long-term reliability while also improving workplace safety.

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UV LED Wavelength

While many manufacturers continue to use a broad range of techniques for their curing applications, an increasing number are embracing UV LED due to its numerous benefits. Learn more about UV LED wavelength, Peak Irradiance & Energy Density.

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Lifetime: UV LED vs. Mercury

Phoseon’s air-cooled LED lamp surpasses 70,000 hours of operational on-time with irradiance being greater than 80% of its original output when the test first began ten years ago.

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Reliability Engineering

Phoseon’s extensive reliability testing includes highly accelerated life testing, temperature, and vibration assessments to ensure products are rugged and reliable in even the harshest environments.

A Clean and Environmental friendly solution


Printing companies who hold on to the conventional UV curing methods are doing less well in terms of expanding their business than their colleagues/competitors who are embracing UV-LED technology, the latter which is seen as clean and ecologically sound.

The type of lamp used in printing applications is usually a medium pressure linear mercury vapor arc lamp. Medium pressure UV lamps do cure inks and coatings instantly, allowing the equipment to run at very high speeds for extended periods, but they operate at very high temperatures (850 to 950 Celsius or 1550 to 1750 Fahrenheit). But mercury lamps aren’t always the best choice.

Here we have the first disadvantage from a cost perspective. If the lamps run too cool, they may not cure the ink or coating, so printers need to keep them on at all times, wasting a great deal of energy – expensive both in terms of money and environmental cost.

The cost of wasted energy because of the ”always on” necessity when measured over the entire lifespan of a printing press should be counted in too. These lamps generate a lot of heat and ozone as well. Both need to be forced out of the production area away from press operators – again costing a lot of otherwise useless energy.

There’s also the risk of contaminants such as spray powder from other presses or dust particles that can bake on the lamps, creating a haze and decreasing lamp performance. The high temperature these lamps run at prevents printing on delicate materials such as bubble plastic or very thin substrates.

If you want to learn more about the 2020 Mercury Ban and Minamata Convention, read our latest Technical Note.