| 摘要 |
<p>PURPOSE:To obtain a surface inspecting apparatus without erroneous operations by preventing the case, wherein erroneous operations occur and a good product without defects might be detected as the defective product when a surface inspecting apparatus using a light reflecting method is used and dust and the like are attached on the surface in the inspection for the surface of a long material such as a synthetic resin pipe. CONSTITUTION:Jetting ports 7 and 8 are provided in a case body 2 of an inspecting apparatus. The jetting ports 7 and 8 are connected to a pressure-gas generating device 10. The pressure gas is blown to the surface of a material under inspection 1 passing the inside of the case body 2. Dust and the like, which are causes of the erroneous operations and attached to the surface, are blown out. After the clean surface state is obtained, light is emitted from a light projector 6.</p> |
