Procedure and device for measuring the thickness of a liquid layer on a roller of a printing press
US6684049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2002 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Apr 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/066
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A procedure and device for measuring the thickness of a liquid layer, in particular an oil layer, on the rollers of printing presses. The mass of the liquid layer in the printing press is measured by a measuring device and that the thickness of the liquid layer on the roller be determined on the basis of the measured mass of the liquid layer. The measuring device preferably contains a piezoelectric sensor in a quartz microbalance, which picks up the frequency changes on the basis of the mass applied to the surface or on the basis of changes in the mass and converts them into corresponding masses or mass changes on the basis of the liquid layer. Furthermore, a control device is provided which controls the application of fluid on the roller as a function of the masses or mass changes determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.