Patent ID: 6062138
Filing Date: 2000-05-16
Classification: B41F,Y10S

Abstract:
In an offset printing press having a plate cylinder, a lithographic printing plate mounted on the plate cylinder wherein the printing plate has image and non-image areas and has side edges extending circumferentially around the plate cylinder which may pick up ink and a blanket cylinder having a resilient blanket in engagement with the image and non-image areas of the printing plate for picking up ink from the image areas of the printing plate and which may pick up ink from the side edges of the printing plate, the improvement wherein the resilient blanket has a selected thickness of engagement with said image and non-image areas of the printing plate and has blanket side edges juxtaposed to the side edges of the printing plate wherein said blanket side edges are of a thickness less than said selected thickness whereby said blanket side edges will not engage and pick up ink from the printing plate side edges.