What causes picture framing on the blanket of an offset press and how do you get ride of it?

Question

offset printing problem, not 100% sure of the term to use, either picture framing or windowing on the blanket. Where ink builds up on the non printed areas of the blanket to an excessive amount, bleeding onto the printed sheet. Using Laser plates on a abdick 9800 with IPA based fountian solution

Answer 1

thats a bit technical for this site mate, hope someone clever hooks on