Developing device for an image forming apparatus which reduces toner consumption and waste
US5617190A · kind A · utility
8Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1994 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Oct 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an image forming apparatus, a developing device has an intermediate developing roller or belt between a developing roller and a photoconductive element. A high-tension power source applies a bias to the intermediate developing roller or belt. The bias before the start of printing is preselected to be zero volts, a voltage opposite in polarity to a charge potential deposited on the photoconductive element, or a voltage identical in polarity with the charge potential and smaller in an absolute value of potential than a potential deposited on the photoconductive element after exposure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.