Ricoh Company, Ltd.

Shiro Saeki

Sunao Ikeda

Kunihiro Uotani

Fumitaka Hyodou

Masumi Ikesue

Yukitaka Nakazato

Goro Mori

Hiroyuki Ishizaki

A recycling automatic document feeder (RADF) for use with a copier or similar equipment for feeding a stack of documents to an illuminating position one by one, then returning each document, and repeating the cycle to illuminate the documents a plurality of times. A gate pawl is located movable into and out of contact with a document table. A feeding section has feeding means for feeding, a stack of documents on the table one by one. A transporting section transports the document fed from the feeding section to a predetermined illuminating position and, then, discharges the document. A returning section turns over the document transported by transporting means. The returning section returns the document discharged to the top of the stack of documents. Sensors sense a condition in which the documents are fed or transported. A controller performs control in response to output signals of the sensors such that when the stack of documents is to be illuminated a plurality of times, the gate pawl is moved away from the table after the illumination of the last document of the first cycle to start the feed of the second cycle, then the gate pawl is brought into contact with the top of the stack, and then the gate pawl is moved away from the top of the stack to transport the remaining documents to a feed position one by one, dividing the first and second cycles of documents.

Recycling automatic document feeder

A recycling automatic document feeder for a copier which feeds a stack of documents loaded on a document table one by one to a predetermined exposing position, returning the document to the top of the stack after imagewise exposure, and refeeding such documents one by one to the exposing position. A discharge section is movable on and along the table in an intended direction of document feed. The document feeder is capable of returning documents of various sides easily to the top of the document stack which is located at a document feed position on the table.

Recycling automatic document feeder for feeding documents of various

An apparatus for automatically and circulatively feeding originals comprises an original feed-out section for sequentially feeding out the originals stacked therein from an original placed at a lowermost position, each image to be copied of the stacked original being kept facing downwardly, and an original reversing section provided with a reversing roller for reversing the direction of movement of the original exposed at an original exposure section. In the case of both-side copy, the exposed original is guided through a first reversing path in the direction of the original feed-out section by means of clockwise rotation of the reversing roller, and in the case of single-side copy, the exposed original is guided through a second reversing path in the direction of the original feed-out section by means of counterclockwise rotation of the reversing roller.

Apparatus for automatically and circulatively feeding originals

An automatic original circulating and feeding apparatus apparatus comprises an original feeding base for receiving a plurality of originals thereon, which are piled up with image faces thereof turned downwardly, an original separating and feeding device for successively separating the piled up originals on the original feeding base one by one from a lowermost original and feeding them one by one in an order separated, a reversible and speed-changeable belt conveyor device disposed in an exposure part for exposing each of the originals fed, and a sensor disposed at a position separated by at least the largest original length from the original separating and feeding mechanism, for selectively setting a scanning copy mode or a sheet through copy mode and for controlling a position of the original for a copy mode selected.

Automatic original circulating and feeding apparatus

An automatic original circulating and feeding apparatus comprises an original feeding base for receiving a plurality of originals thereon, which are piled-up with image-faces thereof downwardly, an original separating and feeding device for separating and feeding piled-up originals one by one, a belt conveyor device disposed in an exposure portion for exposing each of the originals, a turning over and conveyor device disposed at downstream of the belt conveyor device in the carrying direction, a discharging and carrying device disposed to connect the turning over and conveyor device with the original feeding base, and a switchback turning over and conveyor device disposed along an original passage provided in the discharging and carrying device.

An automatic document feeder for feeding documents in order to expose a document in a sheet through mode in which an optical system is fixed, a document is moved at constant speed, including; rollers for feeding documents one at a time from a document feeder table to a constant glass plate of a copy machine, a senser for sensing the length of the document, a scale disposed at an end of the contact galss plate at which the document is fed, and a controller for moving the exposure position of the optical system.

Automatic document feeder

An automatic original circulating and feeding apparatus apparatus comprises an original feeding base for receiving a plurality of originals thereon, which are piled up with image faces thereof turned downwardly, an original separating and feeding device for successively separating the piled up originals on the original feeding basee one by one from a lowermost original and feeding them one by one in an order separated, a reversible and speed-changeable belt conveyor device disposed in an exposure part for exposing each of the orignals fed, and a sensor disposed at a position separated by at least the largest original length from the original separating and feeding mechanism, for selectively setting a scanning copy mode or a sheet through copy mode and for controlling a position of the original for a copy mode selected.

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Yokohama, Japan

Shiro Saeki