Image density adjustment method and apparatus
US4256401A · kind A · utility
30Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The image density adjustment method for use in electrophotography in which, when the image density of a copied image is decreased below a standard image density, the development bias-potenial is increased while the exposure to be applied to a photoconductor is kept constant. When the image density of a copied image is increased above the standard image density, the exposure is decreased while the development bias voltage is kept constant. Thus, the image density of a copied image can be adjusted as desired to minimize the effect of light fatigue of the photoconductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.