Mannesmann Aktiengesellschaft

Dieter Beck

Gerhard Lohrmann

Erich Steppe

Stefan Bischof

In a parallel setting device for a print head carriage guide relative to a print medium support (6) in printers, in particular in matrix printers, the print head carriage guide includes a parallel disposable and position adjustable carriage guide axle (5) relative to the print medium support (1) and disposed rearwards relative to the print medium support at the printer frame 1 and a front carriage guide axle (4) adjustable to a minimum distance and disposed opposite to the print medium support (6). The rear and the front carriage guide axle (4,5) in each case are supported in the side plate (2,3) of the printer frame (1). The print medium support (6) is disposed at a level different to that of the front carriage guide axle (4). In order to find a simple and more precise operating solution, which is based on measurable part steps, it is recommended, that the rear carriage guide axle (5) is supported in the side plates (2,3) with cams rings (13) and a parallel positioning between the print medium support (6) and the print head carriage guide is adjustable by one-sided lifting and lowering of the rear carriage guide axle (5).

Parallel setting device for a print head slide support guide

A ribbon cassette having a casing with a releasable cover, includes a pulley mounted for rotation in the casing, key-means project beyond the casing of the cassette for engagement with an external drive, a pressure roller is rotatably mounted in the case, a slide movably mounts the pressure roller to obtain a first position of engagement with the pulley and a second retracted position, a projection on the slide is externally accessible through an opening in the casing for shifting the slide from the first to the second position and vice versa; an additional projection on said slide runs in another opening in the casing for guiding movement of the slide along a long wall of the cassette casing; a brake is also disposed in the cassette which holds a removable endless ink ribbon that is insertible and inserted in the casing and fills the casing essentially in its entirety, the ribbon runs through a gap between the pulley and the pressure roller on one hand and the brake on the other.

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Setzingen, Germany

Dieter Beck