Developer mechanism with sensor and notched auger
US5189475A · kind A · utility
7Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Aug 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0889
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner concentration sensor is located adjacent a transport auger within the developer sump. The toner concentration sensor projects from the bottom wall of the developer sump towards the transport auger to an extent that the sensor overlaps with the blade of the auger. A portion of the auger blade is notched to avoid contact between the auger blade and toner concentration sensor. The position of the sensor allows for accurate toner concentration sensing due to the active flow of toner material across the surface of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.