Which is the best light for the LED exposure unit?

There are many people out there who are seeking to build LED exposure units for the purposes of screen printing. One of the major components of any exposure unit is the source of light. Therefore, one of the key questions in the minds of many people is on the light source that they should use for their exposure unit.

Before we can discuss the best source of light that is suitable for the purposes of burning the screen, there are some two key questions that should come to mind:

• What is the type of capillary or emulsion that you intend to use?

What is your preferred artwork?

Emulsion types

Many individuals who intend to build their own LED exposure unit make a major mistake in thinking that the key consideration they should think of is the light source. However, this is not the case. Even though the source of light helps to determine the type of art that you will use for the purpose of making the stencil, it is important to consider the speed as well as light sensitivity.

Photopolymer usually has a lot of sensitivity to the light. Not only does it expose quickly, but it has a wide range of exposure time. While the source of light is an important factor in determining your preferred art for making the stencil, the capillary file or emulsion type is a factor that is more important to consider. You can consider the capillary film or emulsion as a photographic film that is used in the manufacture of the stencil. You should also consider the speed as well as light sensitivity.

Different photopolymer emulsion products have been developed by manufacturers because they understand that most screen printers prefer to use the cheaper options of exposure light sources despite the fact that these are not the best options. Even where there is a poor source of light, the photopolymer liquid emulsions  as well as photopolymer capillary films usually work well.

Art work

This is another key consideration. You will need to consider whether you will screen print your image if they don’t have the small fine line or tiny dots. If you answer in the affirmative, your light source isn’t a great consideration. Artworks that have huge blocky areas or the medium or large size, type tend to get exposed in an easy manner to any light source. This is even when you assume that you will be using the screens that have been coated with the photopolymer emulsions.

Exposure light

The most suitable exposure light is the one with the most ultra-violet light. Halogen and fluorescent have low UV light. This is despite the fact that they are cheaper to buy and are readily available. It is for this reason that they are commonly used. If you would like the best LED exposure unit, you should get in touch with Aurora LED.