Patent ID: 7672486
Filing Date: 2010-03-02
Classification: B41F,G07C

Abstract:
1. A method for evaluating the quality of printed matter produced by a printing press or printing machine, with the printing machine producing several copies of the same printed matter, comprising the method steps of: (a) providing an inspection system including an image sensor adapted to create an image data signal in response to sensing the printed copies; (b) selecting a quantity of copies from the produced copies of the printed matter; (c) evaluating said image data for the copies in said selected quantity with regard to at least one error type selected from a group of different error types including a color error, an intensity error, a contour error or a positioning error, where, within the selected quantity of copies, an error of a particular error type detected on at least one of the copies is evaluated in relation to at least one error of a different error type detected on the same copy or on a different copy; (d) fuzzifying each of said types of errors in a classification function (μc:μf:μs); and (e) classifying the printed matter as being of good or poor quality based on the evaluation, wherein said selected copies define a common capture of image data and wherein all errors are evaluated relative to one another as detected from the image data of the same capture.