초록 ▼

A mail tracing apparatus contains only input and output mail article detectors at the beginning and end of a mail transport path, respectively. By comparing the “on”and “off”times of the detectors at either end of the path, it can be determined, for example, if an initially doubled item has been sep

A mail tracing apparatus contains only input and output mail article detectors at the beginning and end of a mail transport path, respectively. By comparing the “on”and “off”times of the detectors at either end of the path, it can be determined, for example, if an initially doubled item has been separated into distinct mail articles, or if a mail article has dropped out of the path during transport. In either event, an error code is generated in the event of a non sequitur, and the tracing of subsequent mail articles may proceed without error.

대표청구항 ▼

A mail-article tracing apparatus comprising: first and second mail detectors provided at an entrance and an exit of a transport path, respectively, for detecting mail-articles transported on the transport path, the distance between said first and second mail detectors corresponding to the length of

A mail-article tracing apparatus comprising: first and second mail detectors provided at an entrance and an exit of a transport path, respectively, for detecting mail-articles transported on the transport path, the distance between said first and second mail detectors corresponding to the length of plural mail-articles; first and second measuring means for measuring intervals between two adjacent transported mail-articles at the entrance and exit of the transport path, respectively, in response to the outputs of said first and second mail detectors, said first and second measuring means delivering data expressing said intervals; first and second memory means for storing said data expressing the intervals measured by said first and second measuring means, respectively; means for comparing the data delivered from said first and second memory means; and abnormality detecting means for detecting an abnorality in mail-article transportation on the transport path when the data delivered from said first and second memory means are substantially different.