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approved press sheet, OK sheet

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approved press sheet, OK sheet (In French BAT, bon à rouler, bonne feuille, épreuve acceptée) sheet printed at the end of the setup of the production printing press, approved as a visual and metrological production print reference. assessment appréciation the Delta E detected is assigned to categories by means of predefined tolerance intervals, e.g. “unnoticeable”, “small” or “large”.