Soiling check of the window of a measuring apparatus for checking sheet material
US9001318B2 · kind B2 · utility
3Cited by
11References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2011 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Jan 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/157
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method carries out a soiling check of the measurement window of a measuring device for checking sheet material. A measuring device carries out the method. A device for processing a sheet material comprises the measuring device. The soiling check uses, only areas of the measurement window which correspond, in terms of width and position in the beam path of a light, to the areas of the checked sheet material which are checked during the checking of the sheet material. As a result, fewer cleaning steps are needed for the measurement window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.