Non-Image/image area piling is ink and paper fiber build up on the blanket that prevents proper offset.
You may also see at times see piling in the plates and rollers.
|Ink Emulsification. Ink water logged.||Lower water settings. Check ink emulsification curve|
|Rollers improperly set.||Reset rollers|
|Blankets low or under packed||Repack as necessary. Replace blanket|
|Ink improperly dispersed or grind.||Consult with your ink manufacturer|
|Unstable Ink||Consult with your ink manufacturer|
|pH and or conductivity out of range||Check and adjust to proper spec.’s|
|Ink roller train surface temps high||Adjust vibrator chill water to proper temps and check ink train roller settings|
|Dry ink was not fully tranferred from the blanket to the paper causing a relief image||Check blanket to blanket squeeze, blanket cylinder pressure, plate and blanket packing. Increase NPA levels to help keep debris moving.|