Plate Blinding or Wear

Plate has been improperly prepared

Review procedures for platemaking process

Surfactant has contaminated the dampening system

Make sure all parts of the dampening system that come in contact with detergent are thoroughly rinsed before being reinstalled on the press

Fountain solution is poorly balanced or improperly formulated

Check pH and conductivity of fountain solution.  Consult your Sun Chemical representative

Plate cleaners or scratch removers have not been completely rinsed from the plate

Avoid using excessive amounts of plate cleaner or scratch remover. Rinse plates thoroughly afterwards.  Be sure all water, sponges, rags, etc, that come in contact with the plate are clean.  Do not let plate cleaners dry on the plate

Stock is depositing filler, coating or lint on the blanket, affecting plates

Use a more lubricated ink.  Review dampening setting.  Check pH and conductivity.  Discuss alternatives with your paper supplier.  Consult your Sun Chemical representative

Faulty or improperly set ink or dampening rollers are wearing plates

Check rollers for condition and settings

Ink is not properly formulated

Consult your Sun Chemical representative

Blanket is overpacked or loose

Check packing or blanket tension.  Set to manufacturer’s specifications.

Foreign particles are entering the ink train

Check materials such as paper, ink, and wash-up solution.  Check overhead structure for foreign materials that may be dropping onto press

Vanishing dot occurs in image area due to a non-image area build-up on the plate and blanket surrounding the dot

Use a more lubricated ink.  Increase blanket  washing interval. Consult your Sun Chemical  representative