Abstract: An image forming apparatus with a binding function wherein small bands of toner are deposited on paper sheets, a plurality of said sheets are then stacked and thereafter said small bands of deposited toner are fused, thereby binding said sheets.In order to form said small bands of toner on an electrostatic latent image carrier, the present invention is provided with a charger disposed between an exposure position and the developing position so as to be movable perpendicularly to the paper transport direction, an optical shutter disposed in the image exposure optical path and selectably operable, or a scale disposed at one side of a platen glass for preventing light from reaching the image carrier.Said small band of toner formed on the image carrier may be developed by a special toner such as waste toner removed from the surface of the image carrier after being supplied to copy the original document image, white toner, color toner, or highly self-adhesive toner.

Abstract: Disclosed is an electrophotosensitive member and its preparing method. The electrophotosensitive member comprises an electrically conductive substrate, a photosensitive layer, and an overcoat layer having a rough surface with convexities and concavities. The number of convexities and concavities are about 500 to 3000 per 1 cm in a linear distance, and the maximum depth difference of the convexities and concavities is about 0.05 to 1.5 .mu.m. The rough surface having the convexities and concavities is formed directly on the overcoat layer. The electrophotosensitive member according to the present invention reduces the friction coefficient of the contacting area between the electrophotosensitive member and a cleaning device, and improves the durability of the overcoat layer and the photosensitive layer.

Abstract: A photoreceptor charge control arrangement to be employed for electrophotographic copying apparatuses wherein a specific circumferential portion on a uniformly charged photoreceptor is first exposed by a referenced exposure source to a specific amount of exposure and successively, the surface potential of the circumferential portion mentioned above is detected either at the relative position immediately before a position for an imagewise light exposing station or at the position juxtaposing the position of the station mentioned above, so that the successive comparison of the surface potential thus detected with a fixed reference is capable of effectively providing an appropriate control signal which can be employed to compensate the amount of exposure of the exposure source, irrespective of the surface condition of the photoreceptor.

Abstract: The operation of a slit exposure type copying apparatus is controlled to avoid overheating of a transparent cover for the original supporting station by controlling either, or both, of the excitation of the exposure lamp and the return movement of the movable scanning of the original. A detector switch is mounted in the path of movement of the scanning mechanism and is actuated thereby to deenergize the exposure lamp means when the scanning mechanism has travelled a distance substantially equal to that distance required to scan the original. A minimum distance of travel for the scanning means is defined and includes at least one second detector switch which is exposed in the path of movement of the scanning mechanism and is actuatable thereby to return the scanned mechanism to its initial position.