| 摘要 |
PURPOSE: To automatically detect the fine irregular defect or soil of a sheet formed body online. CONSTITUTION: A high illuminance and high directivity light is emitted from the oblique direction to a transparent sheet formed body from one side of the continuously transferred transparent sheet compact, and the transmitted light transmitted by the transparent sheet formed body is received by an image input device 2, and of the signal obtained by the receipt by the image input device 3, at least one kind of signals continuously exceeding preset high lightness threshold d1 and low lightness threshold d2 , or the low lightness threshold d2 and a high lightness threshold d1 is judged as a defect. |
