Patent ID: 8823953

Claim:
A method for optical detection of the position of flat printed print shop products ( 10 , 10 a , 10 b ), the method comprising: postpress processing the print shop products ( 10 , 10 a , 10 b ) on a circulating endless conveyor including a plurality of conveying sections ( 4 ); guiding the flat printed print shop products ( 10 , 10 a , 10 b ) by transparent conveying means ( 2 , 2 a ) of one of the conveying sections ( 4 ) between at least one contrast light source ( 30 ) and at least one optical sensor ( 16 ); and irradiating a first side of the flat printed print shop products ( 10 , 10 a , 10 b ) by the contrast light source ( 30 ) to produce a silhouette ( 14 , 14 a , 14 b , 14 c , 14 d , 14 f ), which is registered by the optical sensor ( 16 ).