Method for manufactuing a stamp to emboss wire cloths in order to make watermarks and equipment to implement this method
US5486928A · kind A · utility
5Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1992 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Sep 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/45212
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A new process for making an embossing punch comprises the steps of: (a) the values of an image are put into numeric form; and, (b) the punch is automatically and directly engraved. The numeric image is converted into continuous control values for a path of an engraving tool over a continuous surface and the level curves of said surface are plotted to provide the continuous engraving path. One possible application is embossing fabrics for the manufacture of watermarked paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.