Printed solid areas are not uniform or smooth in appearance. Ink density is uneven or light.
|Stock has a non-uniform surface.
|Consult paper supplier for better grade of paper. Consult ink supplier for an ink that will minimize the problem.
|Too much printing pressure.
|Reduce pressure, check blanket packing and gauge, check press settings.
|Improper setting on ink rollers, or rollers are in poor condition.
|Check ink roller settings and reset to specifications. Check roller condition and durometer.
|Improper ink and water balance
|Adjust ink and water settings, usually reducing the water and ink will help the most.
|Blanket needs to be replaced, or has become worn in certain areas, or has been contaminated by chemistry or paper fillers and coatings.
|Replace blanket or properly clean blanket. Consult blanket manufacturer.
|Poor ink transfer or laydown.
|Consult ink manufacturer.
|Plate image area not accepting and transferring ink properly.
|Check to make sure plates are being processed properly. Consult plate manufacturer.
|Lack of impression.
|Check blanket height.
|Improper fountain chemistry mix and or poor dampening
|Check for proper dosage of chemistry and check dampening rollers for uniform application.