Browse Prior Art Database

Printwheel Cartridge With Knurled Ribbon Guide Surface

IP.com Disclosure Number: IPCOM000042562D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Aldrich, CS: AUTHOR [+4]

Abstract

The daisy wheel cartridge shown has a wide ribbon 1 (shown in dotted outline so as not to obscure the cartridge) which is translated vertically along the spaced guides 3 to present different levels of the ribbon for printing. To facilitate such vertical movement of ribbon 1, the outer surfaces 5 on each of the guides are knurled or textured. Ribbon 1 has been found to move more freely across the textured surfaces 5 than across corresponding surfaces which are smooth. This is especially true in the common case in which the guides 3 and the back surface of ribbon 1 are resin materials having some inherent affinity. The textured surfaces 5 consist of randomly scattered partial spheroids of 0.1 to 0.5 millimeter (mm) height and 0.5 to 1.5 mm diameter covering 60 to 100 percent of the area.

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Printwheel Cartridge With Knurled Ribbon Guide Surface

The daisy wheel cartridge shown has a wide ribbon 1 (shown in dotted outline so as not to obscure the cartridge) which is translated vertically along the spaced guides 3 to present different levels of the ribbon for printing. To facilitate such vertical movement of ribbon 1, the outer surfaces 5 on each of the guides are knurled or textured. Ribbon 1 has been found to move more freely across the textured surfaces 5 than across corresponding surfaces which are smooth. This is especially true in the common case in which the guides 3 and the back surface of ribbon 1 are resin materials having some inherent affinity. The textured surfaces 5 consist of randomly scattered partial spheroids of 0.1 to 0.5 millimeter (mm) height and 0.5 to 1.5 mm diameter covering 60 to 100 percent of the area.

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