Thermal transfer ribbon for high density/high resolution bar code applications
US5939207A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | May 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal transfer ribbon having a pigmented layer with a unique combination of melt viscosity, hardness and mechanical properties and an ultra-thin release layer between the pigmented layer and a substrate is provided. The thermal transfer ribbon includes a release layer having a thickness of 0.1 to 1.0 micron provided on one side of the substrate, the release layer being composed of an ethylene vinylacetate copolymer, .alpha.-olefin maleic anhydride copolymer and wax. A pigmented layer is provided on the release layer and is composed of a low structure carbon black, a polystyrene resin and a polyacrylate resin. A heat-resistant backcoat is preferably provided on the back side of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.