| 摘要 |
PURPOSE:To indicate that a product has passed an inspection, by sticking a label with a rejection mark to the product, and erasing its rejection mark by a pass mark same in color as a ground color when the product passes the inspection. CONSTITUTION:A label 1 is stuck to a product 3 whose surface color is black. In such a state, the product 3 is fed out to an inspection process, and whenever it passes an inspection, a pass mark 4 is put by black ink onto a rejection mark 2. In such a way, when all the processes for an inspection are ended, if all the rejection marks 2 are painted out by the pass mark 4, its product is decided to have passed the inspection. If the rejection mark 2 remains, the kind of defect can be discriminated in accordance with its position.
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