Image forming apparatus having a paper jam detecting system for the automatic document handler
AssigneeKabushiki Kaisha Toshiba
InventorHiroshi Watanabe
Life of this patent
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Abstract
In an image forming apparatus according to the present invention, when a resist sensor detects an error or a malfunction in the forward feeding of the document, a main processor continues the copying operation for the document until a preset number of copies for the document are completed. After the completion of copying, the error is corrected and then the document is discharged. The image forming apparatus is simple in operation, and enables the correct number of copies to be made without complicated control.
Claims11
An image forming apparatus for producing a plurality of copies from a single original, the apparatus having an image reading position where images of the original are read and an upstream position located upstream of the image reading position, said apparatus comprising:
- means for carrying originals in succession, said carrying means carrying a first original to the image reading position and, at the same time, carrying a second original to the upstream position;
- means for detecting a carrying malfunction regarding the second original which is carried to the upstream position by the carrying means;
- means for forming images in succession, said forming means forming an image of the first original on image forming media, and forming an image of the second original on image forming media after completion of the image forming operation of the first original;
- and
- means, operating when the detecting means detects the malfunction, for preventing the forming means from starting the image forming operation of the second original after completion of the image forming operation of the first original.
An automatic document carrying device for carrying a document to an image reading position to read an image of the document, comprising:
- means for carrying the document to the image reading position, said carrying means including means for feeding the document, means for carrying the document to an intermediate position between the document feeding means and image reading position, and means for carrying the document from the intermediate position to the image reading position;
- means for discharge the document from the image reading position after the image of the document is read;
- means for detecting a carrying malfunction in the document carried by said carrying means, said detecting means including means for detecting a carrying malfunction in the document carried from said document feeding means to the intermediate position;
- and
- means for instructing said discharging means to discharge the document from the image reading position after the image of the document at the image reading position is read when said detecting means detects a carrying malfunction in the document carried from said document feeding means to the intermediate position.
Dependencies are inferred from the claim text.