When the original is placed, its size is automatically detected.
The size of the placed original is indicated as the scan size, and the size to be transmitted is indicated as the send size.
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In the above screen, the scan size (the placed original) is 8-1/2" x 11" (A4) and the send size is auto. For example, if the scan size is 8-1/2" x 11" (A4) and the send size is 5-1/2" x 8-1/2" (B5), the image will be reduced before transmission.