Calibrating toner concentration sensors using reload measurement
US9086648B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2014 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Feb 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/5041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Devices and methods detect an amount of toner on a photoreceptor caused by a printing process, and calculate a reload signal using a processor. The reload signal shows the amount of toner being reloaded on a donor roll from a toner container to replace the toner being removed from the donor roll during the printing process (as detected by an optical sensor). Such devices and methods generate a toner concentration (TC) sensor response representing a concentration of toner particles within the toner/developer mixture using a TC sensor, calculate a calibration sensor relationship between the TC sensor response and the reload signal, using the processor, based on changes in the TC sensor response and the reload signal that occur while changing the toner concentration during the printing process, and calibrate the TC sensor based on differences between the calibration sensor relationship and a previously established model relationship using the processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.