Abstract: A pressing installation for use with a copying arrangement which installation includes a pair of opposed pressure rollers mounted on shafts mutually inclined toward one another with bearing blocks being provided for supporting the rollers. The bearing blocks are pivotably connected on one side of the pressure rollers by a leaf-spring joint arrangement with an adjustable clamping arrangement being provided on the other side of the pressure rollers for maintaining the bearing blocks in a fixed position. The spring arrangement forms a fixed spring joint free from play between the bearing blocks.

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.

Abstract: A detachably engaged unit is provided for association with a copying machine wherein the unit contains a housing which is detachably connected through a power coupling to the copying machine. The unit includes a support arrangement for supporting a sheet of paper having an image thereon in charge relief, a conveying arrangement for transferring the sheet of paper containing the image thereon to a station where chargeable powder is transferred to the charged surface, and a pressing arrangement spaced rearwardly therefrom for fixing the image on the paper under pressure. The unit makes it possible to readily detach the support arrangement, the powder applying arrangement and the pressing arrangement from the copying machine for repair, replacement or service.