When scanning multiple sheets into pdf, some sheets occasionally come out sideways (landscape). How can this be prevented? I scan packages of 25 to 40 sheets into one pdf document, which are printed by clients. When a sheet becomes sideways in the end result, they have to print in three steps: before the landscape page, the landscape page itself (after rotating 90 degrees), and finally the remainder after the landscape page. There is nothing particularly different about the pages that get landscaped.