Resources Contact Us Home
Endless ribbon cartridge

Image Number 2 for United States Patent #4053042.

An endless ribbon cartridge for supplying ribbon to an external printing station with relatively uniform tension and including an anti-fouling mechanism to prevent snarling of the ribbon as it re-enters the cartridge. The cartridge comprises a two-piece housing having a cover and a main body portion with separate exit and entrance slots and interior boundary walls partially defining a ribbon chamber having entrance and exit portions. An endless ribbon is partially received within the chamber in random folds, the remainder of the ribbon traversing a looped path from the chamber exit portion through the housing exit slot and the housing entrance slot to the chamber entrance portion. A capstan and pinch roller assembly is provided adjacent the entrance slot to translate the ribbon along the looped path. Tensioning is located at the chamber exit portion, and optional additional tensioning is located at the exit slot, providing a drag force for maintaining the ribbon tension at the external printing station substantially uniform. These tensioning devices are comprised of a simple spring member having a blade portion and an offset central hub, the spring member being mounted in a flexed position. The boundary wall adjacent the exit portion of the chamber is provided with a relieved channel which receives a mating boss depending downwardly from the inner surface of the cartridge cover member in order to limit motion of the exiting ribbon in the direction transverse to the desired translational direction.

  Recently Added Patents
Anthranilic diamide compositions for propagle coating
Compounds for nonsense suppression and methods for their use
Scale information for drawing annotations
Systems and methods for controlling registration of advancing substrates in absorbent article converting lines
Semiconductor apparatus
Horse stationary tab
Discharge lamp lighting circuit
  Randomly Featured Patents
Traffic control glove
Apparatus and method for feature edge detection in semiconductor processing
In-line IV drug delivery pack with controllable dilution
Systematic evaluation of sequence and activity relationships using site evaluation libraries for engineering multiple properties
Hydrogel particle formulation
Selective target cell activation by expression of a G protein-coupled receptor activated superiorly by synthetic ligand
Perhydroisoindole derivatives and preparation
Characteristic temperature-derived hard bubble suppression
Vehicle for children
Amide compound and use thereof for controlling plant diseases