Thermal mass transfer of metallic images
US4985321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/0517
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a process for thermal mass transfer of metallic images, the process comprising the steps of PA1 (a) providing PA2 (1) a toner fluid dispersion comprising electrostatically charged, colloidal elemental metal particles dispersed in an electrically nonconductive organic carrier liquid and an amount of a soluble surfactant effective to charge and stabilize said dispersion, PA2 (2) a dielectric or photoconductive substrate, and PA2 (3) a thermoplastic receptor substrate, PA1 (b) electrophoretically depositing the charged colloidal elemental metal particles of the toner fluid in a uniform or imagewise fashion on the dielectric or photoconductive substrate using standard electrographic techniques to provide a donor substrate bearing an electrically nonconductive, colloidal, elemental metal coating thereon; PA1 (c) transferring, by application of energy, said metal coating from said donor substrate to said thermoplastic receptor substrate, to provide a metallic image on said receptor substrate, PA1 (d) optionally, subjecting the colloidal, elemental metal coated donor or receptor substrate to an electroless metal plating solution to provide a second elemental…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.