Original feeding apparatus
AssigneeCanon Kabushiki Kaisha
InventorsNaomi Takahata, Takeshi Honjo
Life of this patent
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Abstract
A copying machine with an ADF, has an AF section for separating originals in an original tray one by one, a DF section for feeding the separated original to an exposure position on a photosensitive drum, a normal original insertion port for receiving originals during normal operation, a return original insertion port for allowing insertion of return originals which must be fed again after a jam has occurred, sensors for detecting the number of copies which have been produced, the number of return originals, and the number of sheets remaining in the machine, and microcomputers for controlling the operation of the copying machine and the ADF. An interrupt copy operation can be performed with a simple operation at any time.
Claims18
An image forming apparatus comprising:
- original feeding means for feeding an original to a predetermined position;
- image forming means for forming on a recording medium an image of the original at the predetermined position;
- first detecting means for detecting transfer abnormality of the recording medium;
- second detecting means for detecting the number of originals which must be fed again to the predetermined position by said original feeding means when said first detecting means detects the transfer abnormality of the recording medium;
- display means for displaying data associated with an image formation by said image forming means;
- and
- control means for controlling said display means to display the number of originals which must be fed against to the predetermined position in accordance with an output from said second detecting means and, after release of the transfer abnormality, changing the display data.
An image forming apparatus comprising:
- original feeding means for feeding an original to a predetermined position;
- image forming means for forming on a recording medium an image of the original at the predetermined position;
- first detecting means for detecting the number of originals which must be fed again to the predetermined position by said original feeding means when a transfer abnormality of the recording medium occurs;
- second detecting means for detecting the number of recording mediums remaining on a transfer path for the recording medium within said image forming means when the transfer abnormality of the recording medium occurs;
- and
- display means for displaying the number of originals which must be fed again and the number of recording mediums remaining on said transfer path in accordance with outputs from said first and second detecting means.
An apparatus according to claim 15, wherein the transfer abnormality is a jam of the recording medium.
An original feeding apparatus comprising:
- supporting means for supporting an original thereon;
- transfer means for feeding the original from said supporting means along a predetermined feeding path to an exposure station, and for discharging the original along a predetermined delivery path after completion of the exposure;
- and
- control means for controlling said transfer means to discharge all the originals which are present on said feeding path and said delivery path when an interrupt mode occurs.
An image forming apparatus comprising:
- separating/feeding means for separating an original and feeding the separated original to a predetermined position;
- image forming means for forming on a recording medium an image of the original at the predetermined position, said image forming means having exposure means for exposing the original at the predetermined position;
- and
- control means for controlling said separating/feeding means to perform, prior to discharging the original at the predetermined position after completion of an exposing operation, a separation operation for the next original so that the exposing operation for the original at the predetermined position and the separation operation for the next original are not overlapped.
Dependencies are inferred from the claim text.