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Troubleshooting Guide - Pressroom Conventional
Of Press Issue: Set-off/Blocking
Solution: Change to faster setting ink.
Solution: Check pH and conductivity of fountain solution. Run as little ink and water as possible, especially on non-porous substrates.
Solution: Increase powder application. Visually check for the amount and the evenness of distribution with a blacklight.
Solution: Run shorter lifts, tray the lifts, wind sheets.
Solution: Use static eliminators.
Solution: If temperature is over 100 degrees F, the ink could resoften and block or set off. Reduce heat in delivery dryers. Winding sheets could dissipate heat quicker.
Solution: Visually examine spray units and clean/unclog if necessary.
Solution: Check on spray powder container for particle size. Check with manufacturer for proper particle size for the weight of substrate being used. The heavier the substrate, the larger of particle size is required.
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