Troubleshooting Guide - Pressroom Conventional
On Press Issue: Plate Blinding
Potential Causes
Blanket is swollen or embossed
Solution: Change blanket and use packing gauge (if possible) to check pressure.
Rollers are too hard or in poor condition
Solution: Check with durometer gauge. Replace rollers as needed.
Ink and dampening form rollers set incorrectly
Solution: Set to correct specification.
Abrasive particles are destroying image
Solution: Check ink grind, fountain solution, solvents, etc. Replace all contaminated material.
Plate is incompletely developed, leaving gum on imaged areas
Solution: Wash plate. If problem persists, have plate remade.
Plate and blanket are improperly packed
Solution: Check packing with packing gauge. Improper packing causes different surface speeds between plate and blanketand will wear image prematurely.
Ink and dampening rollers are set too hard to the plate
Solution: Stripe rollers to the plate. Review press manufacturers specifications and adjust if necessary.
