Web stabilization for non-contact web guidance in flying-change printing units
US6986305B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Aug 20, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2601/324
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The printing-material web is guided in the same position and plane when the transfer cylinders are moved apart for the flying printing-plate change, so that contact between the web and the transfer cylinders and smearing are avoided, that is to say undesired contact with ink-carrying parts. When the transfer cylinders are moved apart, web-guiding elements at the web inlet and/or web outlet support the printing-material web on both sides during the plate or sleeve change by supporting elements which are narrow or act at points and can be displaced transversely with respect to the printing-material web. The printing-material web continues to be guided in the same position and plane, and smearing is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.