Abstract: A fixing roller device having a pressure roller and a heating roller as the fixing roller. Heating elements sealed into glass cylinders are located inside the heating roller, parallel to a roller axis. One heating element consists of a coil in a middle zone of the heating roller, while the other heating element has two coils in edge zones of the heating roll. Two temperature sensors are arranged respectively in the middle of the heating roller and near one of the end faces of the heating roller, at a small distance from the heating roller surface, and are connected to a control system which controls the current supply to the heating elements and cuts this supply as soon as the temperatures measured by the temperature sensors reach predetermined intended values.

Abstract: Disclosed is a magazine for holding a stack of sheet materials and being adjustable to accommodate stacks of different size sheet materials, comprising: a base plate; two sliding plates mounted longitudinally displaceably on the base plate; a bottom plate positioned laterally displaceably in spaced relationship above the sliding plates; a cam follower mounted on the side of the bottom plate facing the sliding plates; longitudinal confining means for the stack of sheet materials mounted on one opposing axial end of each of the siding plates; lateral confining means for the stack of sheet materials mounted on at least one lateral side of the bottom plate; and means, including a lever pivoted on the base plate and positioned in the space between the sliding plates and the bottom plate and a cam disk pivoted on the base for rotation with movement of the lever and positioned above the lever in said space so as to engage the camming surface of the cam disk with the cam follower for longitudinally displacing the sli

Abstract: An electrophotographic apparatus having a movable web of plastic material on which is disposed a vapor-deposited conductive layer and a photoconductor layer. The conductive layer is in slidable contact with a fixed potential stationary electrical contact having a graphite surface.

Abstract: A corona discharge wire made of electrically conducting wire of high tensile strength to which is connected a metallic fixing element on both sides of the discharge portion. The element forms a fused mass disposed in a zone surrounding the wire and solidified around it. The fixing element may consist of two parallel pieces of wire interconnected by an annular extension.