Lüscher Technologies AG – Quality, Reliability And Innovation

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Lüscher Technologies AG – Quality, Reliability And Innovation

Lüscher is a leading global manufacturer of state-of-the-art imaging systems for various printing technologies used in the graphic arts and textile industries. Backed by 73 years of experience, Lüscher manufactures many kinds of cutting-edge equipment.

JetScreen DX Round, Lüscher’s state-of-the-art UV laser diode direct exposing system, uses next-generation, long-lasting laser diodes to reduce the time it takes to produce high quality rotary screens with a maximum width of 3500 mm. The laser diodes enable significant time savings, since they expose screens at a high resolution with high speed. In addition, no consumables are required for JetScreen DX Round, which makes the overall screen making process greener, economical and more efficient.

Modular Design
JetScreen DX Round has a modular design and can be customised to suit special requirements of customers. The standard configuration includes a 1200 dpi setting head with 16 individually controllable laser diodes, with an option for 32 diodes. The 16 laser diode configuration exposes a screen coated with standard emulsion, a repeat of 640 mm, and a width of 2200 mm in less than 10 minutes. For a similar screen, the 32 laser diode configuration reduces the exposure time to 5 minutes.

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Currently, the different types of imaging systems available are: masking with ink/wax, engraving, and exposing.

Masking (with ink/wax)Engraving Exposing
§  Resolution limited by technology

§  Deformation of drops by impact

§  Running cost of ink/wax

§  Imaging and exposure are not done together, hence additional production steps are required

§  Emulsion is removed

§ CO2 laser destroys coating on printing area

§ Exhaust removes coating particles

§  Emulsion is cured

§ UV laser cures non-printing area

§ Printing area is washed out

Exposing technology saves time overall compared to engraving:

Processes:Engraving technologyExposing (LüscherDX) technology
Coating and drying
Polymerisation×
Engraving/exposure
Washing×
Drying×
Polymerisation×
Preparation×

Estimated time in minutes for 640 mm × 2800 mm screen:

 Engraving technologyExposure technology
Imaging4515
Washing Out15
Drying30
Total4560
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Although the number of steps are higher for the exposing system compared to engraving, the Lüscher DX exposing system actually results in significant time saving. This is because once the exposure of one stencil is completed, the exposure of the second screen can be started immediately. The concurrent running of all processes considerably reduces the time required to make a screen.

As a result, at the end of four hours, the number of screens made using Lüscher’s exposing technology is more than double of the number of screens made using engraving technology! 

Number of hoursNumber of screens with engraving technologyNumber of screens with laser exposing technology of Lüscher
1st hour11
2nd hour25
3rd hour49
4th hour613
Total1328

 In addition, there are numerous benefits of JetScreen DX Round exposing technology over the conventional engraving technology: 

  • High output quality
  • 1200 dpi resolution ensures round dot with diameter of 25 mm
  • Better quality half tone (or gradient) and raster (or dot matrix) images
  • Very low energy consumption of less than 1.5 kW
  • Laser diodes (16 diode or 32 diode configuration) work with constant energy efficiency
  • Plug and expose; easy installation
  • Easy change of screen by just unlocking one screen
  • User-friendly software
  • Due to air pressure inside the screen, screens with dents can also be used 
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A.T.E. Enterprises Private Limited is responsible for the marketing, sales, and service of Lüscher products in India. A.T.E.’s domain expertise coupled with Lüscher’s state-of the-art technology will help textile printers take advantage of this technology to gain a competitive edge.

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