Devices for checking the quality of sheets

摘要

The invention relates to a device for checking the quality of articles to be checked, comprising a first inspection device which detects image data of a surface on the front side of the article to be checked and an evaluation device which evaluates the quality of the article to be checked based on the detection result of the inspection device. A second inspection device is provided for detecting a rear side of the articles to be checked and a third inspection device is provided for illuminating the articles to be checked.