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Delayed Tack Ribbon for Laser Transfer and Other Printing

IP.com Disclosure Number: IPCOM000086139D
Original Publication Date: 1976-Jul-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Bruce, CA: AUTHOR [+2]

Abstract

An improved thermal transfer printing system is described.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Delayed Tack Ribbon for Laser Transfer and Other Printing

An improved thermal transfer printing system is described.

The printing system utilizes a printing ribbon having an adhesive material on the surface and the printing substrate such as paper may also have an adhesive on the surface. A layered structure is provided at the interface between the ribbon substrate and the ribbon dye material, to reduce the dye-substrate bond and produce a very large preferential adhesion of the dye material to the printing paper.

A particular ribbon comprises a MYLAR* ribbon substrate which is coated successively with cellulose nitrate and crystal violet dye.

The ribbon is then coated with a polyurethane adhesive resin. Upon application of heat during printing, the adhesive becomes tacky and remains tacky for a short time so that a bond is provided between the ribbon adhesive and the paper adhesive, and the dye is removed from the heated area of the ribbon. By proper choice of adhesive, direct transfer onto uncoated paper is achieved.

The described printing technique requires much less energy than conventional thermal printing systems to achieve a particular optical density. * Trademark of E. I. du Pont de Nemours & Co.

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