Plate Blinding

Problem:

Plate has been improperly prepared.

Solution:

Review procedures for platemaking process.

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Problem:

Surfactant has contaminated the dampening system.

Solution:

Make sure all parts of the dampening system that come in contact with detergent are thoroughly rinsed before being reinstalled on the press. Control the use of blanket and press washes, and plate cleaners.

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Problem:

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

Solution:

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 area are clean. Do not let cleaners dry on the plate!

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Problem:

Faulty or improperly set ink or dampening rollers are wearing plate.

Solution:

Check rollers for condition and settings.

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Problem:

Blanket is overpacked or loose.

Solution:

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