Troubleshooting Guide - Pressroom Conventional
On Press Issue: Tinting/Toning
Potential Causes
Fountain solution concentration incorrect
Solution: Adjust pH and conductivity to proper specification.
Ink/water balance incorrect
Solution: Adjust to proper ink/water balance.
Too much pressure between plate and blanket
Solution: Set to manufacturers specifications.
Setting/durometer of dampener and ink rollers out of specification
Solution: Set rollers to manufacturers specifications. Replace rollers if durometer is not correct.
Ink not water resistant
Solution: Review formula. Add water resistant additive if necessary.
Plate improperly exposed or developed
Solution: Correct plate making procedure.
Fountain solution contaminated
Solution: Change fountain solution.
Paper coating contaminating the ink train
Solution: Use low tack inks, low water settings and low pressure settings consistent with good reproduction.
