TROUBLESHOOTING
Backing Away
Blinding of Plates
Chalking
Crystallization (Reticulation)
Dot Gain
Drying
Flying and Misting
Ghosting (Chemical)
Ghosting (Mechanical)
Hickies
Picking/Linting
Piling
Rubbing and Scuffing
Scumming
Set-Off/Blocking
Tinting/Toning
Trapping
Unstable Ink/Water Balance
Unstable Ink/Water Balance
PROBLEM-Frequent on-press adjustment necessary to maintain print quality. SYMPTOM-Solids or halftones may appear “washed out” and weak.

probable cause remedy
1 Excessive fountain solution. Reduce dampener settings. Increase isopropyl alcohol or alcohol substitute to reduce the amount of fountain solution needed to keep the plate clean.
2 Improperly formulated or prepared fountain solution. Adjust pH/conductivity to manufacturer’s specifications.
3 Improper dampening roller setting.

Reset rollers. Check to see that the vibrator roller, not the plate, drives the dampener form rollers.

4 Improper ink form roller and durometer settings. Conduct an ink stripe test to determine form roller pressure and check durometers with proper gauge.
5 Improper ink fountain settings. Adjust fountain keys and sweep for proper balance.