| 摘要 |
PURPOSE:To make it possible to read out a variety of bore diameter accurately, scarcely making an error so as to improve working efficiency by providing an information generating system wherein the bore diameter information is converted into and detected as a color information and then the color information is reconverted to the bore diameter information on generation of the bore diameter information. CONSTITUTION:In an information generating system 1 of a bore diameter of a printed wiring board, the detector 4 is positioned above an identification color mark 3 which corresponds to the predetermined perforating position on a film 2. The detector 4 irradiates a light beam over the mark 3. After receiving the reflected light, it generates a detection signal having color information corresponding to the color of the mark 3. The information 4a on the quantity of the reflected light is digitized at A/D converter 5 and input to a bore diameter information generating device 6, whereas the information on the color filter 4b is directly input to the device 6. Thus accurate reading of a variety of the bore diameters can be executed and furthermore, working efficiency can be favorably improved. |
