Ink or other material accumulates on the blankets or transfer cylinders on the outside dimensions of the paper stock being run.
|Plate exposure or processing incorrect||Using deletion pen hone, use in effected area and restart press. If this area stays clean plate exposure or processor is incorrect. Talk with your plate representative if problem persists.|
|Poor form roller settings||Check rollers and reset as necessary to manufacturers spec|
|Form rollers oscillating on the plate||Lock or shim rollers to prevent lateral movement|
|Fountain solution no keeping the plate background clean||Check pH and conductivity. Flush, clean and refill if necessary. Make sure of any alcohol replacements|
|Wrong roller being used (Hickey pickers or flocked rollers)||Replace with rubber rollers if necessary|
|Deep or uneven grain in plate||Talk with your plate representative for correct plate|
|Calcium overload||Add additional calcium removers to fountain solutions.|