Pressure-sensitive transfer elements and method
US4499140A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1984 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Mar 5, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249996
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method for producing novel multiple use pressure-sensitive transfer elements in the absence of volatile coating vehicles. The invention comprises preparing a molten coating composition including a compatible binder material mixture of hard wax and meltable synthetic resin, and a fluid ink comprising a solution of dyestuff in an oleaginous vehicle which is substantially incompatible with said wax and substantially compatible with said synthetic resin, coating said mixture onto a thin flexible foundation such as a plastic film and cooling to form a solidified cohesive microporous network of said binder material having uniformly dispersed within the pores thereof said fluid ink. Said ink is pressure-transferable from said network incrementally under the effects of imaging pressure along with that surface portion of the binder material network which is pressure-adhered to the copy sheet under the effects of the imaging pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.