Abstract: A document conveyance apparatus for conveying a document to an exposing surface of a copying apparatus, and conveying the document out from the exposing surface after an exposure to copy the document. The apparatus including a driving roller unit for supporting and driving a conveyance belt, including (i) at least a pair of driving rollers, rotatably mounted on a conveyance frame with first supporters, for driving the conveyance belt suspended thereon, wherein at least one of the driving rollers is driven by a driving motor, (ii) the first supporters for supporting both ends of the driving rollers, wherein each of the driving rollers is supported movable in the direction of its axis of rotation so that at least one end of the driving rollers is capable of being removed from the roller supporters, and (iii) a positioner for being mounted on each of the driving rollers so that each of the driving rollers is positioned in the direction of its axis of rotation.

Abstract: A document feeding apparatus wherein a member for regulating the rear end of a document is provided movably in non-stepped manner substantially in a document feeding direction at the back of a document stacker having a paper feeding unit at the forward portion thereof. The movement of the rear end regulating member is controlled by a control device. A movable paper discharging device is provided. The movable paper discharging device has a discharging member, which is trained so as to surround the rear end portion of the document stacker in the shape of letter "C".

Abstract: A document feeding apparatus having both an automatic and manual feed mode. the apparatus includes a paper feeding belt for feeding documents from a stack set on a document stacker, wherein the lowermost document in the stack is fed, and a stop roller placed in contact with an upper surface of the paper feeding belt to prevent the overlapped feed of documents. Documents are fed through a common paper path in both modes. The belt and roller are commonly used in both the automatic and manual document feed modes. In the automatic document feed mode, the belt is driven while the roller is held in a non-rotational state. In the manual document feed mode, the belt is driven and the roller is driven by the belt.

Abstract: A document feeding apparatus wherein a document is separated one by one and fed onto a platen glass and subjected to exposure the outside of the document to light, and thereafter the surface of the document is reversed by a reversible rotational mechanism and again moved onto the platen glass to expose the inside of the document.

Abstract: A method and an apparatus for copying images printed on both sides of a document onto both sides of copy sheets uses an automatic document conveying device capable of reversing the side of a document to be copied. Also disclosed is a the resuming method of a copying operation after removing a jammed sheet during the reverse side copying step of the both-sided document and the delivering method of the both-sided document when the copying operation is cancelled.