Abstract: An apparatus for a metered feeding of ink to a ductor roll of an offset printing device. The ductor roll is adapted to be dipped into an ink pool which is connected to a device for supplying metered amounts of ink. The device for supplying the metered amounts of ink is controlled by an installation for monitoring a level of ink in the ink pool. The monitoring installation includes a distance sensor which is constructed as a capacitive proximity switch.

Abstract: A duplicating arrangement which includes a copying machine for copying an original and an offset printing machine operatively connected to the copying machine for producing prints from a master copy. The copying machine and the offset printing machine are both constructed so as to be independently functional modules with an automatic control device being provided for controlling the operation of the copying machine and offset printing machines such that, depending upon the duplications to be made, the duplicating arrangement feeds a copy from the copying machine to either a depository or the offset printing machine, wherein the copy so-forwarded serves as a master copy in the offset printing machine.

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 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.