Surlay proofing method
US4304836A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1977 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Jun 3, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for making a multicolored reproduction combining overlay and surprint characteristics in which a photohardenable layer, such as a photopolymerizable layer, is cast on a semi-rigid, transparent, support film, the photohardenable layer is exposed in an appropriate exposure unit through a color negative representing one color, the exposed layer is developed to remove the unexposed areas and leave the exposed image areas, an adhesive layer, such as an acrylic adhesive, is coated on a release sheet, the coated release sheet is contacted with a receptor sheet at a temperature and pressure sufficient to transfer the adhesive to the sheet, the developed layer is contacted with the adhesive coated sheet at a temperature and pressure sufficient to transfer the image areas to the sheet and the steps of casting a photohardenable layer, exposing the layer, developing the layer and contacting the image areas with the sheet is repeated for each additional color desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.