| 摘要 |
PURPOSE:To shorten the time of opaque operation by previously designating the part of an object, to be detected or not to be detected, detecting other than the designated part, and shielding light from there. CONSTITUTION:Previously, the part not to be detected is marked or designated by a digitizer; this position information is inputted into an opaque device 10. The object 1 is inserted into the inlet 11 of a device 10 and carried to detecting means 12 and 13, afterward, it is exposured and transmitting light is received by a light receiving element 17. Succeedingly, when the object 1 is detected by a detecting means 18, the position of image information is automatically set based on a carrying distance and a carrying speed according to the detected information of the means 13, and it is inputted into a light shielding means 40. Thus, light can be shield without need of previous positioning, therefore the time of opaque operation can be shortened. |
