A method of deskewing and side registering a sheet is disclosed. The method includes the step of driving a sheet non-differentially in a process direction with a sheet driver, the sheet having an unknown magnitude of side-to-side misregistration and an unknown initial angle of skew. The method further...http://www.google.com.au/patents/US5169140?utm_source=gb-gplus-sharePatent US5169140 - Method and apparatus for deskewing and side registering a sheet