| 摘要 |
Apparatus for processing mail articles, for example postcards and letters, includes means for transporting a mail article via a path (2) which includes a stamp detecting device (3) having means (16,16b) for irradiating a stamp (15) on an article (14) and means (18a, 18b) for detecting radiations from each side of the stamp (15) to derive respective signals therefrom, means (22a, 22b) (22) for comparing the levels of the respective signals and means (20a, 20b) for determining the stamp detection according to the outputs of the comparing means (22a, 22b) (22). |
