Web fed printing machine having pasting-related misregistration eliminating apparatus
US6938543B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2004 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | May 12, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F13/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A web fed printing machine includes a web path provided between two sequentially disposed printing units and a misregistration detector for detecting misregistration in superimposition printing performed by the printing units. During superimposition printing, cylinder fine-move mechanisms finely move corresponding plate cylinders based on detected misregistration in order to adjust the registration. A web path length modification mechanism is provided in the web path. A control unit is connected to the web path length modification mechanism, the misregistration detector, and a paster. When a pasting signal is generated, the plate cylinder fine-move mechanisms stop making registration adjustment. At predetermined timing, the misregistration detector detects misregistration in printing performed by the printing units. The web path length modification mechanism performs a misregistration elimination action based on detected misregistration. Subsequently, the plate cylinder fine-move mechanisms resume making registration adjustment, and the web path length modification mechanism performs a return action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.