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Ribbon Drive Arrangement for a Printer

IP.com Disclosure Number: IPCOM000053121D
Original Publication Date: 1981-Sep-01
Included in the Prior Art Database: 2005-Feb-12
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Dials, EN: AUTHOR [+2]

Abstract

A ribbon drive arrangement for a printer uses rollers mounted to a printhead carrier for holding the ribbon firmly against the imprint-receiving medium in order to draw ribbon from a carrier mounted ribbon supply as the carrier moves forward. The rollers are preferably located adjacent the printhead and serve in holding the ribbon against the receiving medium at the print point. This drive approach is particularly adapted to use with thermal ribbon printers, which employ ribbons that are not prone to ink transfer when subjected to mild pressure.

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Ribbon Drive Arrangement for a Printer

A ribbon drive arrangement for a printer uses rollers mounted to a printhead carrier for holding the ribbon firmly against the imprint-receiving medium in order to draw ribbon from a carrier mounted ribbon supply as the carrier moves forward. The rollers are preferably located adjacent the printhead and serve in holding the ribbon against the receiving medium at the print point. This drive approach is particularly adapted to use with thermal ribbon printers, which employ ribbons that are not prone to ink transfer when subjected to mild pressure.

Referring to the figure, a receiving medium 10 is supported by a platen 12 to be adjacent a printhead assembly 14 which is mounted to a carrier 16. The carrier 16 is mounted to move parallel to the longitudinal axis of the platen 12 and carries ribbon supply and takeup spools 18 and 20, respectively. The ribbon (denoted 22) extends along a path from the supply spool 18 to the takeup spool 20 that passes between the printhead assembly 14 and the receiving medium 10. Mounted above and below the printhead assembly 14 are wheels 24 that roll along the ribbon 22, as the carrier 16 advances, so as to press the ribbon against the receiving medium 10. With this arrangement, the pressure between the ribbon 22 and the receiving medium 10 produces friction that prevents relative motion. Forward movement of the carrier consequently results in the ribbon 22 being drawn from the supply spool 18.

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