Brand new copier. Light back ground on front of copies. Light black band about 2 inches on back side of copies on the leading edge that get darker as you copy. Less than 4K copies. Have been seeing this problem on several new machines and have been unable to figure out whats causing it. Orderd new drum and blade. But was told to hold off because this has not fixed the problem. Not sure what all else has been tried. Anybody else seen this?