Apparatus for detecting the reasonable condition of developer in a copying machine
US4582415A · kind A · utility
6Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1984 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Apr 23, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0853
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The gap between a magnetic sensor and a fitting member supporting the magnetic sensor and the surface of the magnetic sensor are coated with thin nonmagnetic coating materials having small surface friction to prevent the developer from being introduced into the gap and adhered therein. Smooth flow of the developer is maintained, and the stable and accurate detection of the condition or ratio of the developer is ensured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.