Method for preparing a hot melt ink transparency
US4801473A · kind A · utility
18Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | May 14, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/0052
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A transparency includes a transparent substrate such as a polyester material, an ink pattern disposed on one surface of the transparent sheet in the form of three-dimensional ink spots having curved surfaces and a transparent layer covering the ink spots which has an index of refraction approximately the same as that of the ink spots. The transparent layer is applied to the substrate and the ink spots in the form of a liquid coating which wets the surfaces of the substrate and ink spots and spreads over them to produce a transparent layer having a maximum deviation of about 20 degrees from a plane parallel to the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.