Method for providing a protective overcoat on an image carrying medium utilizing a heated roller and a cooled roller
US5582669A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1994 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | May 10, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1911
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method and apparatus for laminating a protective overcoat carried on a web to an image carrying medium is particularly useful for covering an image carrying medium having a large area. A hot roller and an actively cooled cold roller form a nip through which the web and image carrying medium advance in a juxtaposed relationship. A temperature differential is created across the layers of the web and medium to promote adhesion between the surface of the protective overcoat and the image while preventing lamination artifacts such as curling and rippling. Postwrap and prewrap angles are used to enhance control of artifacts and assist in post lamination separation of the overcoated image carrying medium from residual web material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.