Abstract: A functional chitosan derivative which comprises a chitin/chitosan, which is a natural polysaccharide, and incorporated therein at least one of a carbohydrate, a photo-reactive functional group, an amphipathic group, e.g. a polyoxyethylene alkyl ether, and a glycosaminoglycan and which, due to the incorporation, has solubility in a neutral medium, self-crosslinking ability, the property of highly containing water or healing wounds, and antithrombotic properties. Namely, the derivative has various properties required of health care materials such as medical products and cosmetics.

Abstract: A functional chitosan derivative which comprises a chitin/chitosan, which is a natural polysaccharide, and incorporated therein at least one of a carbohydrate, a photo-reactive functional group, an amphipathic group, e.g. a polyoxyethylene alkyl ether, and a glycosaminoglycan and which, due to the incorporation, has solubility in a neutral medium, self-crosslinking ability, the property of highly containing water or healing wounds, and antithrombotic properties. Namely, the derivative has various properties required of health care materials such as medical products and cosmetics.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An ABS resin composition is disclosed, adapted for rotational molding (rotocasting), which comprises an ABS resin of from minus 10 to plus 100 mesh size particles having uniformly dispersed and adhered to the surface of the particles an organic compound of a particle size of minus 100 mesh having a melting point of 100.degree.C to 250.degree.C and a decomposition point above 200.degree.C, the weight ratio of resin to organic compound being 100 to 0.1 - 5.0.