Testing image density to control toner concentration and dynamic range in a digital copier
US5298944A · kind A · utility
23Cited by
13References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing system of the type using a two-component developer and capable of reproducing image densities and halftone images stably with no regard to changes in ambient conditions and aging. At least two toner image patterns each having a different toner density are formed on a photoconductive element. The amounts of toner deposited on the individual patterns are sensed by a photosensor, while the supply of toner to a developer and the dynamic range of a latent image are controlled in combination in response to the output of the photosensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.