1. What is the Emulsion Screen Exposure Equation?

The Emulsion Screen Exposure Equation calculates the required exposure time for screen printing based on distance from light source, light intensity, and emulsion factor. It provides accurate exposure timing for optimal screen development.

2. How Does the Calculator Work?

The calculator uses the Emulsion Screen Exposure equation:

Where:

• \( Distance \) — Distance from light source (cm)
• \( Light\ Intensity \) — Light intensity (lux)
• \( Factor \) — Emulsion factor (s)

Explanation: The equation accounts for the inverse square law relationship between distance and light intensity, combined with the specific emulsion factor to determine optimal exposure time.

3. Importance of Exposure Time Calculation

Details: Accurate exposure time calculation is crucial for proper screen development. Under-exposure can cause poor image definition, while over-exposure can make screen reclaiming difficult.

4. Using the Calculator

Tips: Enter distance in centimeters, light intensity in lux, and emulsion factor in seconds. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is distance squared in the equation?
A: This follows the inverse square law - light intensity decreases with the square of the distance from the source.

Q2: How do I measure light intensity?
A: Use a light meter to measure intensity in lux at the screen surface for accurate results.

Q3: What affects the emulsion factor?
A: The emulsion factor varies based on emulsion type, thickness, and specific manufacturer recommendations.

Q4: Can I use this for different light sources?
A: Yes, but ensure accurate light intensity measurement as different light sources have varying spectral outputs.

Q5: Should I test exposure times?
A: Always perform exposure tests with your specific setup to verify calculated times before processing important screens.