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High Efficiency Cartridge-Enclosed Fabric Ribbon

IP.com Disclosure Number: IPCOM000046344D
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Duffee, TM: AUTHOR [+2]

Abstract

This single cartridge, one-way, continuous drive ribbon device permits more efficient use of the ribbon ink and potentially increases the ribbon usage without increasing the ribbon length.

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High Efficiency Cartridge-Enclosed Fabric Ribbon

This single cartridge, one-way, continuous drive ribbon device permits more efficient use of the ribbon ink and potentially increases the ribbon usage without increasing the ribbon length.

Fig. 1 shows schematically the spool arrangement for the ribbon. Ribbon feed direction is clockwise, and the print line is between spools A and B. The ribbon path is from spool A to B, B to C, C to D, from D back around C and feeding from the center of spool C to E with a 180OE twist (Moebius strip effect), and from E to A where the path repeats.

Spools C and D are tilted at a slight angle. This allows spool D and E to be mounted one above the other even though spool D is tilted and spool E is not. Spools C and D are the main reservoir of ribbon and contain many winds of ribbon.

Fig. 2 indicates the path of the ribbon between spools A and B.

The ribbon runs at an angle R between the spools. This allows full and more efficient utilization of the entire width of the ribbon as the printhead traverses and prints. As the ribbon is advanced, the printhead (not shown) prints from top to bottom of the ribbon as well as laterally. The 180OE twist in the ribbon between spools C and E allows more efficient and complete usage of the ribbon ink as the ribbon is fed.

The single cartridge enclosure for the ribbon is shown in Fig. 3. Since the cartridge surrounds the printhead and carrier, carrier travel is the determining factor in the width of...