Control system and method for automatically identifying webs in a printing press
US5483893A · kind A · utility
Inventors
Key dates
| Filing date | Mar 31, 1995 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Mar 31, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2553/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A continuous web printing press (100) having a control system (202) for automatically identifying which one of a plurality of paper webs (108, 120) is running through which one of a plurality of compensators (146, 148) is provided. First and second marking devices (138, 140) apply reference marks (142, 144) on the respective webs (108, 120) to uniquely identify each web (108, 120). Preferably, the reference marks (142, 144) are comprised of a magnetized material, such as a magnetized label. A sensor (154, 156) is positioned at each of the compensators (146, 148) for sensing the reference marks (142, 144) located on the web (108, 120) running through the compensator (146, 148) to automatically identify which web (108, 120) is running through which compensator (146, 148). The marks (142, 144) on the web (108, 120) are preferably positioned on the webs (108, 120) to uniquely identify the webs (108, 120). A computer circuit (200) uses this information to control the path lengths of the webs (108, 120) via the compensators (146, 148). A method is also provided for automatically identifying which web (108, 120) is running through which compensator (146, 148).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.