What is High-speed UV LED ink ?

High-speed UV LED Ink is the most important fact affect your printing quality and efficiency.  Well-formulated inks ensure continued print quality, system uptime reliability, and high productivity without user intervention.

What is UV LED ink?

Compared with traditional UV ink, UV LED inks only active for typical wavelength. Because of special consideration of photoinitiators and pigments
in the ink formulation, which only matches the spectral output of
the LED lamps. These special photoinitiators absorb at a higher
wavelength as opposed to traditional photoinitiators and are
typically more expensive. The spectral output of a LED lamp to
cure UV LED inks is very narrow, 365 – 405 nm, as compared to
a UV mercury system which operates from 200 – 700 nm range.

What is UV LED Curing?

Because of the limited spectral wavelength, UV LED primarily
operates in the UV-A zone and considered to be ‘safe’ because
it is closest to visible light. However, prolonged exposure to
this energy can be dangerous. The UV-B and much of the
UV-C spectrums of light are primarily used for germicidal and
sterilization purposes. The light produced at these wavelengths are
not only harmful to microorganisms but are also dangerous to
humans and other forms of life that may come in contact with it.
These lamps should always be shielded and never viewable to
the naked eye, even though it may appear that little or no light is
emanating from the device. Exposure to these wavelengths may
cause skin cancer and temporary or permanent vision loss or
impairment.

How does high-speed UV LED ink work?

Compared with traditional UV lamp, UV LED lamp only active on typical wavelength. However,  it doesn’t mean UV LED ink need less UV energy for curing. You can see from the following picture of our UV LED Ink testing report, good DOSIS energy will help for improving curing speed and quality. Therefore, we have confidence that even use the same UV LED ink, DPL high power UV LED curing system can cure faster and better.

LED INK TESTING REPORT

How to design Cold UV curing Lamp?

What is Cold UV curing system?

Before we start to explain what is cold UV curing system, we have to explain some basic knowledge of UV curing technology.

How does UV lamp work?

According to the different application, there are several types of UV Lamp.  For example, we can see many UV lamps when we visit emergency or operating room in hospitals. They are UVC lamp, which uses for disinfecting. UVC means the light wavelength from 100-280nm.  For graphics printing and coating industry, we use kinds of Gas-discharge UV lamps or UV LED lamp. Gas-discharge lamps are a family of artificial light sources that generate light by sending an electric discharge through an ionized gas. For UV LED lamp, we will introduce later. 

What is DPL cold UV curing system?

As you know, UV lamp output includes 60% IR energy, a normal metal reflector reflects IR energy out of the lamp head/house, and heat up the touch temperature between your base material and lamp head. Every DPL lamp head/house use specially coated reflectors from the top frame to the two sides frame. These reflectors can absorb 90% IR from your lamp and transfer to the chilling system. Therefore,  the surface temperature of your printing material is the only 5-10C degree higher than your environment temp.

What is the advantage of Cold UV curing system?

Besides of which we mentioned before, reduce UV curing temperature can help improving printing quality. Cold UV curing temperature can also help improving UV lamp bulb ‘s working lifetime. By our pattern design lamphouse, the general lifetime of our UV lamp bulb is over 2000 to 3000hours. On the other way, the lower curing temperature is good for curing  UV lacquer on the thermal sensitive material. For example, even for printing base film as PET film, lower curing temperature will help improving printing accuracy.

More information, welcome to watch our video.

 

Why Choice DPL as your UV LED curing system supplier?

QUALITY MEANS EVERYTHING

DPL are much more than just products, we also share our experience on UV curing printing, UV coating, and UV bonding onto wood, glass, metal, plastic and paper products. We sold more than 3000 sets of UV curing system to our clients in the world.

How to choose the right UV curing system?

UV inks are typically very thick. Although lower viscosities are available, UV inks generally range from 1000-5000 centipoise (as compared with water-based inks in the vicinity of 100 centipoises).Therefore, a right UV curing lamp is one of the most important fact that all printers have to be considered.

Why is DOSIS Energy the most important fact for UV curing system?

As you know that, more than 60% output of UV lamp is IR (heating), means you can only get 80w/cm UV energy output even from a 200w/cm UV lamp, if the lamp doesn’t have any special treatment.

Three ways to improve your UV Curing Efficiency

  • Cold Mirror reflector coating technology
  • Hot Mirror Coating technology for bottom window
  • Focus Lens technology