Abstract: A belt cleaning system to clean a conveyor belt carrier surface includes a first cleaning assembly having a cleaning web sub-assembly. The cleaning web sub-assembly includes a supply roller, a take-up roller, a cleaning web and an applicator. The cleaning web extends from a supply of clean cleaning web wound on the supply roller to the take-up roller. The applicator is disposed intermediate the supply roller and the take-up roller to bias the cleaning web into contact with the conveyor belt carrier surface. The belt cleaning system may also include a second cleaning assembly positioned after the first cleaning assembly in the direction of travel of the conveyor belt. The cleaning webs of the first and second cleaning web sub-assemblies may be dry or wetted with a cleaning liquid.

Abstract: Methods and apparatus for antialiasing images that contain one or more image objects such as colored text, line art, and graphical objects, such that the edge pixels of an antialiased image object will exhibit relatively uniform values, and the appearance of the image object is thereby improved. In one embodiment, an improved antialiasing filter is employed to detect at least one region within the received image. Upon detecting a region containing a background image level that adjoins an image object having pixel values in a range other than a range of limit values, the antialiasing filter sets the pixel values of the edge or border pixels of the image object to substantially the same value. Selection among a logical filter operation and an averaging filter operation may be adaptively employed in the antialiasing filter in order to obtain the desired uniformity of pixel values.