Toner supply control method for electrophotographic copier
US4522481A · kind A · utility
12Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1983 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Nov 3, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/5041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light reflected from a reference pattern having a predetermined reflectivity is focused to a photoconductive element to form a latent image thereon. A degree of deposition of a toner on the latent image is sensed by a sensor and the toner supply to a developing unit is controlled in response to an output of the sensor. A fatigue standard is selected taking into account a fatigue characteristic particular to the photoconductor, so that a bias voltage applied to a developing roller in the developing unit is varied in response to the selected fatigue standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.