Abstract: A drum for an electrophotographic copier which serves as an intermediate image carrier which drum is rotatably mounted in the copier and includes a takeup roll and a supply roll with photoconducting material, in the form of a web, being guided from the supply roll over a deflection roll outwardly to the surface of the drum and over a second deflection roll to the takeup roll. The takeup roll is adapted to be coupled to a drive motor disposed outside of the drum for a stepwise feed of the photoconducting material. The drum is rotatably mounted by two pins with one of the pins being rotatable circumferentially relative to the drum and being non-rotatably connectable with a gear meshing with a further gear mounted on the takeup roll. The one pivot pin is connected by a freewheel mechanism to a drive motor which, in normal operation, drives another component of the copier with the rotational direction of the drive motor being reversible in order to drive the one pivot pin.

Abstract: A drum for an electrophotographic copier with the drum serving as an image support and being connected to a rotary drive of the copier, the drum including a stock roll for accommodating a supply of a photosensitive weblike semiconductor material and an empty or takeup roll for receiving the weblike semiconductor material. The semiconductor material is guided over the outer peripheral surface of the drum from the stock roll and is taken up by the empty roll by means of a preferably stepwise adjustable drive. The drum including the stock roll, takeup roll, and semiconductor material form an exchangeable unit adapted to be inserted as a whole into the electrophotographic copier. The drum includes a slit defined by two deflector rolls from which slit the semiconductor material is adapted to be led into and out of the interior of the drum.

Abstract: A detachably engaged unit associated with a copying machine wherein the unit includes a conveying arrangement for transferring a sheet or web of paper containing a charge relief image thereon to a station or position where a magnetizable powder is transferred to the charged surface of the web or sheet with a pressing arrangement being spaced rearwardly from the powder transfer station for fixing the image on the web or sheet under a pressure. The unit is supported on a pivot axis lying in the zone of a bottom edge of a housing on the copying machine whereby the unit can be pivoted from the copier housing in a conveying direction of the sheet or web thereby facilitating the repair, replacement, and/or service of the elements forming the detachably engaged unit.

Abstract: A copying machine arrangement having an apparatus for applying and fixing a magnetizable powder on a coated and electrostatically charged paper sheet to fix the image thereon. The apparatus includes conveying means for carrying the charged paper to a surface element positioned below a powder dispensing structure wherein a magnetic roller will transfer the carbon powder to the sheet surface and pressing rollers are provided for setting the powder on the paper sheet.