Apparatus and method for detecting a splice in a running length of web
US5953953A · kind A · utility
3Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2513/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for detecting the presence of a splice in a running length of web material, particularly photosensitive web material. The apparatus includes first and second encoders coupled to first and second rollers, respectively. As the web material is transported across the rollers, the speeds of the rollers are continuously and simultaneously detected. The rollers will travel at substantially the same speed when the web is being transported across both rollers. The presence of the splice is detected when the speeds of the two rollers differ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.