TRANSFER-FUSING SPEED COMPENSATION

摘要

In an electrostatographic copier wherein the fuser rolls are positioned closer than the dimensions of the copy sheet from the image transfer area, speed mismatch compensation between the fuser roll nip and the initial image support surface is provided by intentionally driving the fuser roll nip at a different pre-set velocity to form a buckle in the intermediate portion of the copy sheet controlled by selective cyclic reductions in the vacuum applied to a vacuum chamber sheet guide surface between the fuser nip and the initial image support surface, wherein the vacuum guide is in two areas, one of which is provided with a vacuum by the other, but is cyclically atmospherically vented.