| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for a wide floor area for installation, eliminate restrictions on the facilities of an inspecting mechanism, and raise accuracy in inspecting internal defects of a plate material. SOLUTION: Light is transmitted through the moving plate material P, and the internal defects of the plate material P are inspected from the images of the plate material P projected to a screen 21b. A fluid A is jetted to the plate material P to maintain the plate material P in a raised state, and the raised plate material P is moved while supporting it from below on its lower end surface.
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