| 摘要 |
In the case of documents containing information such as blank paper on one side, communication time for both-side transmission is reduced, and both-side recording can be carried out by a receiving side as intended by a sending side even when a page transmission sequence or document images on the front and rear sides are interchanged. When transmitting/receiving page information containing image data on either one of front and rear sides, a transmitter transmits the page information having appended thereto with at least a page counter (PC) indicating page numbers of an actual document, information indicating a front or rear side (SIDE), and the attribute information of virtual page number information (VPC) synchronized with the transmission sequence of the page information, and a receiver image-records the received page information on the both sides of recording paper based on the transmitted attribute information, the page counter (PC) indicating page numbers of the actual document, and information indicating a front or rear side (SIDE).
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