January '23

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Page 52 of 103

G R A P H I C S - P R O. C O M J A N U A R Y 2 0 2 3 • G R A P H I C S P R O 4 7 S C R E E N P R I N T I N G H O W - T O / T U T O R I A L EXPOSURE CALCULATOR STEPS How long do I need to expose my emulsion? Remove dry, coated screen from drying cabinet. Place 10 step exposure calculator on glass of exposure unit and position screen on top. C O U R T E S Y O F V A S T E X I N T E R N A T I O N A L , I N C How long do I need to expose my emulsion? That is one of the most asked questions in screen printing. Due to variables such as light source, emulsion, coating method, mesh color, temperature, and humidity, there is no easy answer. An exposure calculator is the quickest and most accurate way to determine your proper exposure time. Expose screen for twice the amount of time you think may be needed for proper exposure. When time is up, take screen to washout booth and wet it to begin developing your screen. Read calculator to determine proper exposure time. Follow directions of your specific calculator to adjust your time. GP

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