Siemens Aktiengesellschaft

Helmut Reichl

Ludwig Schmidt

Richard Hartl

Christoph Newinger

A device for tensioning a data carrier which is moved by feed tractors, such as a paper sheet moving past a printing station in a non-mechanical printer or copier in which the feed tractors consist of a toothed belt entrained about pairs of wheels, the teeth of the belt engaging perforations in the side margins of the data carrier, has a cam mounted on a shaft between the wheels in a feed tractor. The wheels are mounted on a guide block having a bearing element which acts as a cam follower so that by rotating the cam the wheels are synchronously displaced so as to suitably tension the data carrier in the printing station.

Device for tensioning a data carrier which is moved by feed tractors

An adjustable mounting and driving device is disclosed for a polygonal mirror to be mounted on a drive shaft. The mirror is held at an axial end in a cup shaped cavity in a holder having a central bore for receipt of the drive shaft. The bore has a drive shaft contact area which is relatively axially short allowing the housing to tilt on the drive shaft. A plate is fixably mounted on the drive shaft axially adjacent the holder and has a plurality of axially adjustable set screws engageable with a back wall of the holder to control tilt of the holder on the shaft. A resilient member between a front wall of the housing and an extension of the plate urges the housing into contact with the set screws and rotatably drives the mirror.

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Herrsching, Germany

Helmut Reichl