Inspection system for a sheet-fed recto-verso printing press

US8528477B2 · kind B2 · utility

Assignee

• KBA-NOTASYS SA · CH

Inventors

• Johannes Georg Schaede · Würzburg, DE
• Volker Lohweg · Bielefeld, DE
• Bernd Stober · Rheda-Wiedenbrück, DE
• Volkmar Rolf Schwitzky · Coburg, DE
• Günther Hoier · Ismaning, DE

Key dates

• Filing date: Mar 8, 2007
• Grant date: Sep 10, 2013
• Expiry date: May 20, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F33/0036
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

There is described a sheet inspection system for a sheet-fed recto-verso printing press of the type comprising two printing cylinders (10, 20) for carrying out simultaneous recto-verso printing of the sheets, said sheet inspection system comprising at least a first inspection device (100) for taking an image of a first side of the printed sheets. The first inspection device (100) comprises a first line image sensor (110) for performing line-scanning image acquisition of the first side of the printed sheets, and the first inspection device (100) is disposed in such a way that the first line image sensor visually acquires an image of a printed sheet while the said printed sheet is still adhering onto the surface of a first one (10) of the two printing cylinders (10, 20) of the printing press and immediately before the said printed sheet is transferred to a chain gripper system (5) of the printing press. Also described is a printing press equipped with the inspection system.