PROBLEM TO BE SOLVED: To improve the accuracy of mold appearance inspection.;SOLUTION: An inspection device (1) includes one or more processors that perform an inspection step of inspecting an appearance of a mold (9) using a trained model (LM) constructed by machine learning. Input of the trained model (LM) includes an inspection image obtained by capturing an image of the appearance of the mold (9). Output of the trained model (LM) is information indicating an inspection result of the appearance of the mold (9).;SELECTED DRAWING: Figure 1
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