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Polyethylene Terephthalate Trailer Assembly for Correctable Ribbons

IP.com Disclosure Number: IPCOM000051790D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Trayner, WC: AUTHOR

Abstract

Ink migration to the trailer from a rolled ribbon designed to print wit lift-off correction capability is avoided by using polyethylene terephthalate as the trailer material. The ribbon typically comprises phenolic-based polyamide resin, mineral oil, plasticizer of mixed esters of fatty acids, and pigments, these four parts being in roughly equal amounts by weight and coated on a polyethylene substrate.

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Polyethylene Terephthalate Trailer Assembly for Correctable Ribbons

Ink migration to the trailer from a rolled ribbon designed to print wit lift-off correction capability is avoided by using polyethylene terephthalate as the trailer material. The ribbon typically comprises phenolic-based polyamide resin, mineral oil, plasticizer of mixed esters of fatty acids, and pigments, these four parts being in roughly equal amounts by weight and coated on a polyethylene substrate.

More specifically, the lift-off correctable ribbons of interest are as described in U.S. Patents 3,825,437 and 3,825,470. Such ribbons have been connected to a polyethylene trailer and wound in a hub by winding the trailer on the hub. Ink migration to the trailer has been experienced, resulting in poor print quality from the end of the ribbon.

Replacement of the polyethylene trailer with an otherwise similar polyethylene terephthalate trailer eliminates the migration. Print quality from the end of the ribbon remains good.

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