| 摘要 |
PURPOSE:To quickly and exactly inspect the contamination in a PE tape which is a material to be inspected by irradiating a laser ray to said tape, detecting the quantity of the light transmitted therethrough and detecting the signal in the transverse direction of the tape and the signal in the traveling direction thereof. CONSTITUTION:The PE tape 1 which is the material to be inspected is run and is irradiated with the laser light emitted from a scanner 2. The light transmitted from the tape 1 is detected by a photodetector 3 and the signal for the changed quantity of the light is inputted to a control board 5. The signals of the information in the transverse and traveling direction of the tape are inputted by a pulse generator 4 to the control board 5. The size and position of the contamination of the tape 1 are detected in the control board 5 by the signal from the photodetector 3 and the signal from the pulse generator 4 and are outputted to a printer 6. The laser light is irradiated and the transmitted light thereof is detected in the above-mentioned manner and therefore, the contamination in the PE is quickly, exactly and automatically inspected.
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