Patent ID: 6333987
Filing Date: 2001-12-25
Classification: B41F

Abstract:
A process for the qualitative assessment of material including:providing at least one photoelectric sensor and an evaluation device acting with it;providing a rotary printing press having a printing cylinder;providing several printing forms on said printing cylinder;identifying each of said several printing forms on said printing cylinder as a separate fault source;forming a plurality of printed image areas on the material using said several printing forms;assigning each one of said plurality of printed image areas formed on the material to its associated one of said several printing forms;detecting faulty and fault-free ones of said plurality of printed image areas formed on the material using said at least one photoelectric sensor and said evaluation device acting with it;associating each faulty one of said plurality of printed image areas formed on the material with an associated one of said separate fault sources;providing a separate counter for each one of said separate fault sources;increasing a counter setting of each said separate counter upon detecting a faulty one of said printed image areas formed by said associated one of said separate fault sources; anddecreasing said counter setting of each said separate counter upon detecting a fault-free one of said printed image areas formed by said associated one of said separate fault sources.