| 摘要 |
A system for automatically detecting the presence of staples within a set of original document sheets loaded into a document handling tray and automatically inhibiting the operation of the document feeder to prevent damage to the document feeder or the original sheets in response to detecting a staple, particularly a staple in a preselected area of the document tray in which it is most likely that a staple would be present as documents are normally loaded into the document tray by the operator, including preventing inadvertent actuation or output of the staple detector by metal objects other than a staple, such as an operator's ring temporarily present in the document tray during initial loading the documents, preferably by coordinated confirmation of the completion of document loading into the document tray.
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