Visibility evaluation device of the transparent substrate, a computer readable recording medium visibility evaluation program and it is recorded in the transparent substrate, the positioning device of the laminate, the laminate of the positioning program and computer readable it is recorded Na recording medium, metal and computer-readable recording medium determining unit and the determination program, and it was recorded whether the stack is marked with the presence of the transparent substrate, as well as metal and a transparent substrate detecting a device and a detection program and a computer-readable recording medium on which it is recorded the position of the mark stack has a

摘要

An object of the present invention efficiently I to accurately evaluate the visibility of the transparent substrate. A visual evaluation apparatus 10, the marks 16 present under the transparent substrate 17, the imaging means 11 for taking in over the transparent substrate 17, the image obtained by the photographing, the observed marks 16 observation point by measuring the brightness of each observation point along the direction perpendicular to the direction extending the - and brightness graph producing means, the observation point - - observation point producing a brightness graph at the brightness graph, the mark from the end of the mark 16 16 I includes a visibility evaluation means for evaluating the visibility of the transparent substrate 15 by the slope of the brightness curve occurs through the free portion. Visibility evaluation means, the difference ΔB of the top average Bt and the bottom average value Bb for the brightness curve arising through mark is not part from the end of the mark, the observation point - and oil brightness graph of the brightness curve and Bt and the intersection, can be put to a depth range from the intersection of the brightness curve and Bt to 0.1ΔB based on Bt, are performed by using the intersection of the brightness curve and 0.1ΔB. [Selection Figure] Figure 1