Method and device for adjusting to a minimum value the toner supply to a developing station of an electrographic printing unit or copying unit
US7539425B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2003 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Jun 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00037
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a method to adjust the toner supply to a minimum value in a developer station of an electrographic printing or copying device in which charge images are generated on an intermediate carrier, the charge images being inked with toner at the developer station, a toner concentration is measured in the developer station via a toner marking applied on the intermediate carrier and inked with toner at the developer station. A measurement signal is generated. Dependent on the measurement signal, a supply of the toner to the developer station is regulated. The supply of the toner to the developer station is increased independent of the measured toner concentration upon an under-run of a minimum value of the toner supply per unit time into the developer station so that the transfer of the toner from the developer station to the intermediate carrier is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.