| 摘要 |
PROBLEM TO BE SOLVED: To provide an inspection method of a shadow mask intermediate for determining at a speed and accuracy the quality of the shadow mask intermediate in forming them by cutting in sheets multiple-patterned shadow masks on a long-strip metal base material at a given interval. SOLUTION: A long-strip metal base material 11 formed with multiple-patterned shadow masks is sent into a sheet cutter 60 to be cut in a given size. By a plurality of sensors 50 arranged both in a conveying direction and in right angles, a distance of a sheet-shaped shadow mask intermediate 100a multiple-patterned in a width direction from a cut end to a plucked-off slit 21 is measured to determine the quality of the cutting. The measurement of the distance is performed by the plurality of the sensors at the same time, and the quality of the cutting is determined by comparison with a preset value. If a measurement value of even one of the plurality of sensors 50 is out of the preset value, a cutting defect is determined. COPYRIGHT: (C)2004,JPO
|
