| 摘要 |
PURPOSE:To automatically read and match a marked symbol by displaying an image corresponding to the marked symbol on one surface of a film body transparent plate by a partial approach to the other surface. CONSTITUTION:The tip of the projection part 11a of the marked symbol 11 abuts on the external surface of a film body 5, which is pressed toward the transparent plate 4 to exclude a flowable body 6 by the depression; and pressure plates 7 and 7 are moved against the force of a spring 9, then the flowable body flows to both edge parts of the bag body formed of the film body 5, and the part of the film body 6 which is pressed by the projection part 11a of the marked symbol part 11 approaches or contacts the internal surface 4a of the transparent plate 4, thereby entering a marked symbol detection state. This part is therefore seen black from the side of the external surface 4b of the transparent plate 4 and the white flowable body 6 is interposed between the part of the film body 5 which is not pressed by the projection part 11a and the transparent plate 4, so a black image corresponding to the projection part 11a of the marked symbol part 11 is projected on the external surface 4b of the transparent plate 4 while having a white background.
|
