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Browse Prior Art Database

Ribbon Cartridge

IP.com Disclosure Number: IPCOM000052488D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Briggs, T: AUTHOR [+2]

Abstract

The ribbon cartridge shown in the figure may be used for wire matrix printers to allow easy operator replacement of the ribbon without the need for handthreading the ribbon around guides in a prescribed path. This allows error-free installation of the ribbon in a clean hands fashion; that is, the operator need not touch the inked fabric to load the ribbon.

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Ribbon Cartridge

The ribbon cartridge shown in the figure may be used for wire matrix printers to allow easy operator replacement of the ribbon without the need for handthreading the ribbon around guides in a prescribed path. This allows error- free installation of the ribbon in a clean hands fashion; that is, the operator need not touch the inked fabric to load the ribbon.

The elements of the cartridge are shown in the figure. Box 10 is a molded plastic cartridge which provides the stored volume and the pathway for the ribbon's route. Box 10 contains molded spring fingers 12, which load the two driving rollers 14 and 16 together, and box top 18, which may be ultrasonically staked in place to add rigidity to the cartridge assembly.

Drive rollers 14 and 16 are molded plastic drive elements which feed the ribbon 20 in a randomly stuffed manner into the cartridge storage volume while at the same time pulling the ribbon through the prescribed path and past the print head. The drive rollers 14 and 16 have driving surfaces that are spur gear tooth forms. Ribbon 20 may be an inked nylon fabric ribbon which has been ultrasonically welded into a continuous loop.

Adapter plate assembly 22 mounts within the printer and transmits driving torque through spindle 24 to ribbon drive roll 14. The angles on the top of the four prongs of spindle 24 are designed to allow it to mate with a driving face in roll 14 regardless of the angular position of roller 14 in any new ribbon to be...