Developing apparatus
US4275956A · kind A · utility
1Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Jan 26, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0849
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
If developer within a xerographic developing apparatus becomes excessively charged, excessive toner is added to the apparatus because the excessively charged developer prevents a sensor from sensing the actual toner density within the apparatus. To overcome this problem, an element (contacted by the developer during movement of the latter within the apparatus) is connected to ground through a surge voltage protector. This prevents both the element and the developer from being excessively charged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.