Developer detecting device
US4647185A · kind A · utility
14Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Feb 22, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0875
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developer detecting device includes a developing unit for developing latent images with developer, a stirring unit for stirring the developer, a detector for detecting, during a stirring period, a decrease in the amount of developer and circuitry which outputs a signal detection only after a detection by the detector for at least one stirring period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.