Patent ID: 7273008
Filing Date: 2007-09-25
Classification: B41F

Abstract:
1. An installation for treating sheets of paper printed on both sides, especially papers of value, each having separate printed elements arranged on the sheet in n columns and m rows, said installation comprising a sheet-by-sheet feed device, transfer means, means for treating said sheets, and means for separation of the sheets into at least two separate stacks, wherein said means for treating the sheets comprise a series arrangement of first quality checking means for checking the printing quality of each one of the printed elements on the sheets, printing means located downstream of said first quality checking means for numbering the sheets and/or printing additional elements on the sheets following passage through the first quality checking means, second quality checking means located downstream of said printing means for checking the printing quality of the numbering of the sheets and/or of the additional elements, and marking means located downstream of said second quality checking means for applying a marking on the sheets found to be unacceptable by one said first and/or second quality checking means.