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"Everything you need to know for getting started with LE UV/LED UV"

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Switch to Low Energy (LE) or LED UV printing and get brilliant results faster:

  • Expand your production options
  • Use special substrates to achieve additional special effects
  • Use your coating unit for special effects
  • Shorten delivery times thanks to fast drying times
  • Give your business a new competitive edge

The differences between LE UV and LED UV:

LE UV uses the traditional UV lamp technology, which has been used for almost 40 years, so it is a proven and well-established system. The lamps, however, are not mercury doped as in conventional or full UV but iron doped, making the system more environmentally friendly. The system does not emit any infrared light and much less ozone. Compared to conventional UV systems, DryStar LE UV requires fewer light sources to dry the ink on the substrate, thereby reducing the required energy to run the system and making it more attractive price-wise.

LED uses light emitting diodes to initiate the curing process. The high performance diodes of the DryStar LED system use even less energy than the iron doped lamps of the DryStar LE UV system. The total life time of the light emitting diodes incorporated in the DryStar LED system is up to 25,000 hours of production time, - and they don’t require any warm up or cooling down times. The LED bars are divided into separate modules. Each of the modules on the sides are turned on or off according to the print image. These features lead to even greater energy savings and environmental friendliness with no infrared light or ozone emitted. As the LED’s are a fairly new technology in the printing industry, the investment is still higher than for LE UV.

What LE UV & LED UV have in common:

Both systems are based on conventional UV application but use highly reactive inks, which contain more and different photoinitiators compared to a full or conventional UV system. These photoinitiators cause the immediate drying process and lead to the big advantage of a dry sheet once it comes off the press. It’s also these photoinitiators which make the highly reactive inks more expensive, therefore both applications are most economically used for short runs and a high share of 4/4 or 5/5 jobs.

The dry sheets do not require protection coatings as we often see in conventional printing. The coating unit can now be used for special effects or the investment can simply be saved. As the inks are dry or cured much faster than conventional inks, they basically stay on the sheet surface, so depending on the substrate the colors look brighter and the whole printed image appears sharper.

What customers say:

Check out our customer stories and learn how other print shops profit from the LE UV and LED UV technologies and expertise from Heidelberg:


Contact our experts!

If your business needs to focus on productivity and customer care, our Application Support team offers a 360 degree service that will meet your requirements.

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Free sample booklet

Click here to order our LE UV & LED UV sample booklet free of charge:

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What are you interested in?

A new press ready for DryStar LE UV or DryStar LED production, your existing press upgraded for these applications plus the right consumables to get your production up and running fast and reliably – we support you every step of the way:

A new machine

Are you considering investing in a new LE UV or LED UV printing press? Here are your options.



Want to add LE UV or LED UV features to your existing production systems? Discover our upgrade solutions.



Get the best LE UV and LED UV printing results with Saphira consumables.


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Ohr und Sprechblase in HDM-Farben

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