Patent ID: 7059595

Claim:
A method for correcting movement of a plurality of serially fed flat items in a mailing machine, said method comprising the steps of: frictionally driving the flat items along a predetermined path, the predetermined path comprised of first and second parallel portions along a length of the path, the first and second parallel portions providing parallel frictional driving forces to the flat items; detecting a skew of the items in the predetermined path, the skew being characterized such that an item is positioned so that a leading edge of the item is tilted relative to the path and the leading edge in the first parallel portion of the path is ahead of the leading edge in the second parallel portion of the path, and reducing the skew if the skew exceeds a predetermined value by applying differing air pressure from the first or second parallel portions of the path to the skewed item, the differing air pressure acting to alter relative frictional forces on the skewed item from the first and second parallel portions.