Method for the recognition of color bar on double-sided color, a system for quality control of a color print and device for the quality of a color print

摘要

In a printing press 100 for double-sided colour prints, first and second color bar cb1, cb2 of an expression q are scanned and configuration data of the said control marks pa, so that, on the basis of the configuration data, it is detected whether the first and second color bar cb1, cb2 on the first side or on the second side of the expression q is printed. The determined configuration data of the marks pa, with previously stored in a storage device, is compared with the configuration data, so that in the case of a correspondence between them, the data on the printing quality of the evaluated marks to the printing press 100 in the sequence are transmitted, in which they scan - directions x1, x2 be scanned, and if no agreement is present, the data to the printing press 100 in the in relation to the scanning reverse order to transmit. Thus, the amount of printing ink, based on the data on the print quality, in the order in which these are transmitted, controlled.