KNIFE MARK CHECKING METHOD AND KNIFE MARK CHECKING MACHINE

摘要

PURPOSE:To ensure the checking of the knife mark, by alternately changing the light projecting directions to a single slice plate. CONSTITUTION:The belt shaped projected light is inputted to the single slice plate 1 from a light projector 2. Another light projector 2A is provided at a plane symmetrical position with respect to the light projector 2, with a plane which is perpendicular to the incident part as a center. The light is alternately projected to each sngle slice plate 1, which is sequentially sent continuously, from both light projectors 2 and 2A. The reflected light of the projected light is received and detected by a light receiver 3, and the knife mark X is detected.