Browse Prior Art Database

Polyacrylate Release Layer in Thermal Transfer Medium

IP.com Disclosure Number: IPCOM000044077D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Edds, KE: AUTHOR [+4]

Abstract

U.S. Patent No. 4,453,839 describes a thermal transfer medium or ribbon suitable for correction having a resistive substrate carrying a very thin aluminum layer and ink layer opposite the substrate layer. The ink is rendered flowable by heat from the substrate layer, and printing by the ink is correctable by lift-off correction using the ink layer of the transfer medium itself heated to an intermediate temperature. The patent describes a release layer of relatively low-melting resin located between the aluminum and the ink to facilitate printing without loss of the lift-off correction function. Polyacrylates resins, such as JONCRYL 682* resin, as the release layer material have been found to be particularly suitable.

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

Page 1 of 1

Polyacrylate Release Layer in Thermal Transfer Medium

U.S. Patent No. 4,453,839 describes a thermal transfer medium or ribbon suitable for correction having a resistive substrate carrying a very thin aluminum layer and ink layer opposite the substrate layer. The ink is rendered flowable by heat from the substrate layer, and printing by the ink is correctable by lift-off correction using the ink layer of the transfer medium itself heated to an intermediate temperature. The patent describes a release layer of relatively low- melting resin located between the aluminum and the ink to facilitate printing without loss of the lift-off correction function. Polyacrylates resins, such as JONCRYL 682* resin, as the release layer material have been found to be particularly suitable. Upon printing, the release layer material is situated on the outside of the printing and is important to the surface characteristics of the printing. Polyacrylates tend to form a uniform film which is hard and smooth. Pages densely printed from this ribbon move well with their printing on the glass of copiers and the like. The acrylates are readily coated from isopropanol solutions and are stable in storage. A suitable ink comprises pigment and ethylene vinyl acetate copolymer and a compatible acrylic polymer applied from a water dispersion, as employed in the foregoing patent. * Trademark of S. C. Johnson & Sons, Inc.

1