Wound web roll sidewall quality measurement
US5760891A · kind A · utility
3Cited by
10References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jan 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/8916
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for measuring the quality of the planar end surface of a wound roll comprising: optically projecting a line of light onto the planar end surface of the wound roll to generate and reflect an image of the line of light; focusing the reflected image onto an image sensor to obtain a data output; and feeding the data to a processor that measures deviations in the reflected image of the line of light that are caused by variations in the planar end surface of the wound roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.