Electrostatic copying machine with removable copying drum

Abstract

An electrostatic copying machine wherein the copying drum and the cleaning unit for the photosensitive layer of the drum are mounted in the plastic casing of a module which can be inserted into the stationary main portion of the housing upon pivoting of a cover to open position. The main housing portion and the cover carry rollers which automatically center the copying drum of a properly inserted module when the cover is moved back to closed position. The casing of the module has a vessel for a supply of developing or fixing liquid and means for automatically feeding liquid to a tank in the main portion of the housing when the supply of liquid in the tank descends below a predetermined level. One of the rollers can be driven by the motor of the copying machine to rotate the drum when the latter is properly centered in the housing.

Dependencies are inferred from the claim text.