Developing device for an image forming apparatus and toner cartridge for replenishing a fresh toner to the developing device
US5734952A · kind A · utility
21Cited by
18References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1996 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Feb 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S222/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device for an electrophotographic image forming apparatus and a toner cartridge for replenishing a fresh toner to the developing device are disclosed. A toner is circulated between a toner cartridge and a hopper so that an additive included in the toner existing in the developing device is adequately distributed throughout the developing device. This prevents the concentration of additive in the toner from differing at the ends of the hopper with respect to the center of the hopper. This ensures that images are produced with constant toner density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.