Compensating optical measurements of toner concentration for toner impaction
US6941084B2 · kind B2 · utility
4Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Oct 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0855
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for sensing toner concentration in a developer housing with an optical system containing developer material including toner and carrier, the method, including: emitting light with the optical system through a viewing window in the developer housing onto developer material in the housing; sensing the light reflected off the developer material with the optical system; calculating a toner concentration measurement based upon the sensed light reflected off the developer material; and compensating the toner concentration measurement to account for optical variation due to the developer material condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.