Press dampening system
US5158017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1990 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Sep 11, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S101/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dampening system has a pan for containing dampening fluid, and transfer and metering rollers for bringing dampening fluid up out of the pan. A transition roller contacts one of the transfer and metering rollers. The transition roller is movable between first and second position. In the first position, the transition is off of the plate cylinder and dampening fluid is applied to the plate cylinder by ink form rollers. In the second position, the transition roller is on the plate cylinder. Another version of the dampening system has a bridge roller between the transition roller and a ink form roller, which bridge roller is movable between the third and fourth positions. In the third position, the bridge roller is on the transition roller. In the fourth position, the bridge roller is off of the transition roller. The dampening system can dampen the plate cylinder without the use of alcohol. The transition roller is rotated by a separate motor so that its speed is controlled independently of the other rollers. When the transition roller is on the plate cylinder, it can be slowed down to clean hickeys off of the plate cylinder. When the plate cylinder is clean, it can be moved off of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.