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Product category: Light Emitting Diodes (LEDs)
News Release from: CoolLED | Subject: BA3200
Edited by the Electronicstalk Editorial Team on 10 April 2006

UV LED array offers cure for industrial
tasks

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A large area array UV LED curing system has sufficient power to be used as a curing device for inkjet printers and other industrial curing applications.

CoolLED has developed the BA3200 large area array UV LED curing system that has sufficient power to be used as a curing device for inkjet printers and other industrial curing applications Integration Technology, a company that is the world's largest supplier of UV lamp sources to the inkjet printing market, made a significant contribution to the development of this new product and has been appointed as the worldwide distributor to the inkjet printing market

It is anticipated that this new technology will make a major impact and be a significant advancement in the inkjet printing industry.

The BA3200 is a liquid cooled system designed specifically for inkjet printing and large surface curing.

It generates a flood of high intensity, single-peak wavelength UV light for the curing of inks and is available to suit printhead arrays from 20 to 200mm.

The light source is a high density array of LEDs that are die and wire bonded to a custom-designed CoolLED substrate.

This method of assembly uses a unique patented technique to create a high, yet linearly spread, intensity of UV irradiation.

The LED arrays are built into a narrow extruded alloy housing that can easily be fitted between or alongside the print heads with liquid cooling to ensure accurate output stability.

Generating in excess of 1W/cm2 at 395nm, these units offer unrivalled intensity and cure efficiency.

A heat exchanger can be supplied capable of cooling one or several LED arrays and each LED unit comes complete with an individual electronic drive card offering totally variable intensity control and temperature monitoring.

All ancillary components can be packaged in a PC sized enclosure complete with operator controls as either a development or production tool or alternatively supplied as unit parts for integration into the host platform.

For "pinning" applications the BA3200 can initiate a photochemical reaction with a degree of precision not possible with bulb technology.

The system can be switched on and off instantaneously with zero warm up time and, in contrast to the comparatively short life of bulb light sources, the life of the LED light source is in excess of 10,000 hours.

In addition, the light intensity of the LEDs is controlled precisely with very small and known degradation and so, unlike conventional systems, no light meter is required to monitor the LED output.

The light source emits light of a single wavelength with zero infra-red so it can be positioned close to the target substrate without any danger of heat damage.

Another benefit of the system is that a uniform intensity of irradiation is produced over the full array ensuring an even cure across the total area.

The instrument can be programmed for either a single power level or a variable cure program.

John Boston, Managing Director of CoolLED, said: "We are convinced that the highly repeatable, consistent and long-life light source produced by LEDs, plus the safety and ecological advantages they have over conventional lamp sources mean that this type of product represents the future of curing in the inkjet printing and other applications".

"We have appointed Integration Technology as the world wide distributor of this product for the inkjet market because the company is an acknowledged leader in this field".

Adrian Lockwood, joint Managing Director of Integration Technology, said: "There is a great future in the use of LEDs to provide the light source for the curing process in inkjet printers".

"There is still much work to be done, particularly in the area of developing the chemistry of a suitable ink but I am confident this is only 12 months away".

"We have been looking at LEDs since 2002 and we think the CoolLED solution is the best available in the marketplace by a long way".

"We looked at companies in many other countries and it is a happy coincidence that CoolLED technology was developed a few miles south of Integration Technology".

"We had a significant input into the development of this product and we are confident that it will make a major impact over the next few years".

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