| 摘要 |
PURPOSE:To provide a mounting device which securely fixes fluorescent lamps to the main body of a measuring apparatus by two blocks, upper and lower, whereby the accuracy of its measurement is improved by the elimination of mechanical vibration to be caused by the reciprocal movement of its scanner inside the apparatus. CONSTITUTION:A stage 4 is composed of a main body case 1, a negative pressure chamber 2 which is provided on the frontal slant surface of the case 1 and a perforated plate 3 which is arranged on the upper surface of the case 1. A printing plate 5 is arranged on the stage 4. The main body case 1 is equipped on its front with a scanner 10 which makes reciprocal movement laterally along rails 8, 9 on the perforated plate 3 without touching therewith. The area of image part of the printing plate 5 is measured by two fluorescent lamps 11, 12 and a photoelectric sensor installed inside the scanner 10. Both ends of fluorescent lamps 11, 12 are securely held and fixed by a lower block 20, an upper block 21 and a screw unit 27, etc. |
