| 摘要 |
A method and device for detecting a shortage or excess of an article enclosed in respective envelopes in an automatic mail enclosing and sealing machine. The method comprises the steps of receiving information relative to the number of sheets enclosed in respective envelopes, detecting a variable corresponding to the number of sheets enclosed, discriminating whether the detected variable is within or out of the allowable range corresponding to the sheet number information, and deciding whether a shortage or excess of article is enclosed.
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