| 摘要 |
An image data transmission apparatus reads image data from a document placed on a document tray via a line sensor or the like, and transmits the obtained image data to a receiving apparatus either after rotation of the image data or without rotation of the image data wherein whether rotation is performed or not is determined in accordance with the receiving capability of the receiving apparatus and also on the document setting position. If the rotation is required, the reading operation is performed in such a manner that the line density in the secondary scanning direction in the reading operation will become the line density in the principal direction after the rotation so that no degradation in the resolution and processing efficiency occurs.
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