Abstract: An automatic document feeding apparatus including pickup rollers for picking up documents, a document feed limiting device for limiting the number of documents to one when two or more documents are picked up by the pickup rollers, and a document thickness detecting sensor for detecting the number of documents passing through the document feed limiting device as a thickness of the documents. When the sensor detects that two or more documents has been fed, the document feed limiting device is rotated reversely to return the documents upstream in the document feeding direction. The returned documents are supplied again to the document feed limiting device by the pickup rollers. The document limiting device repeats its own operation until the number of documents is limited to one. If the sensor detects that the number of documents is one, the document is supplied through the document feed limiting device.

Abstract: An image forming apparatus includes a reading section for reading image data, an image forming section for forming an image based on the image data, and a filing section, having a disk memory section, for recording the image data. When a memory disk is inserted in the filing section, a copying mode is changed to a filing mode. The reading section is capable of reading information members, on which image data is recorded, in the read order suitable for image forming or the read order suitable for image filing. An optimal read order can be selected, depending on whether the memory disk is inserted in the filing section or the image forming section.