Print inspection method

A print inspection method in which an area of printed material is optically scanned to obtain image data representing picture elements having variable intensity levels includes counting the number of picture elements at a particular intensity level in the area scanned to thereby generate a frequency...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KEATHLY, DAVID M, ANDREWS, MICHAEL S, BRIGGS, ROBERT S., JR, ANDERSON, JOHN K
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LINING MACHINES MEASURING PERFORMING OPERATIONS PHYSICS PRINTING PRINTING MACHINES OR PRESSES STAMPS TESTING TRANSPORTING TYPEWRITERS
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