Continuous web registration
US4680205A · kind A · utility
69Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1983 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24835
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A web structure with electromagnetic radiation shifting indicia is disclosed. The indicia provide signals used in controlling various processes to be performed on the web as well as for controlling movement of the web. The preferred indicia are normally essentially invisible so that the physical appearance of the web is not affected. The indicia emit wave-shifted electromagnetic radiation in response to incident radiation of a given range to provide a means for determining the positioning of the web during movement as the processes are performed. Process and apparatus for making and using such webs are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.