Choosing a Screen Exposure Unit
Choosing a Screen Exposure Unit
Screen printing is a process that requires a number of different equipment for transferring artwork to a screen and creating high-quality stencils (or screens).screen exposure unit One of the most important tools in this process is an exposure unit, which helps to burn the image into the emulsion on your screen, allowing you to print with your design. There are a few factors that can affect the success of your screen exposure, including the type of light used, the size and detail of your artwork, and the amount of time you spend prepping your screens.
There are a variety of screen printing exposure units available on the market, each designed with specific features and functions for use in the darkroom.screen exposure unit The first step in choosing an exposure unit is determining the maximum screen size you can work with, as this will determine which units are suitable for your shop and which are not. Other factors to consider include the emulsion you will be using and the level of production volume that you expect to have in your shop.
The most basic and common exposure units are pressure pad models that use foam pressure pads and weights to create a tight contact between the screen and artwork for exposure.screen exposure unit Although these units are cheap, they do not produce the best results and are not ideal for use in shops that will require a great deal of detail or halftones. Instead, professional printers should invest in a vacuum bed exposure unit.
Vacuum Bed Exposure Units
Unlike pressure pad models, vacuum bed exposure units utilise the power of a vacuum to pull down on the screen and artwork, creating a tight contact between them. This is essential for the creation of highly detailed designs, as it prevents any light from escaping between the film positive and the screen and ensures that fine definition can be reproduced with your designs.
When selecting a vacuum bed exposure unit, it is essential to find one that will accommodate the maximum screen size your shop can work with. This will help to avoid any complications when exposing your screens and will also reduce the time you need to spend prepping your screens.
Another factor to consider when deciding on a vacuum bed exposure unit is the type of LED bulb that it uses. Modern LED bulbs are a much more efficient option than older metal halide bulbs and provide a brighter light that is more precise when exposing higher mesh screens and halftone dots.
If you are looking for an affordable, reliable, and fast way to expose your screens, then it is definitely worth investing in a quality vacuum or pressure screen exposure unit from Lawson. We stock a range of units, from simple, compact LED fluorescent units that are perfect for small shops to advanced units with programming options and computer-to-screen printing functionality. To see our full range of exposure units, please browse the website or contact a member of our team.
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