System and method for sensing white paper
US6778276B2 · kind B2 · utility
9Cited by
122References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2003 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | May 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6469
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is provided for sorting white paper from a stream of paper wherein the concentration of white paper is less than the concentration of non-white paper. The method includes identifying the white paper by detecting the presence of an optical characteristic of the white paper as the stream of paper is passed by a sensor. Then the white paper is ejected from the stream of paper by controlling one or more actuators directed against the white paper, and thereby separating the white paper from the non-white paper. The method is particularly applicable to the sorting of white paper during curbside recycling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.