Toner cartridge and image forming apparatus
US6567631B2 · kind B2 · utility
11Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Nov 15, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner cartridge includes: a toner storage chamber; a toner collecting chamber; a partitioning wall for separating these chambers; a cylindrical return pipe penetrating through the partitioning wall with a conveyer screw arranged therein and is configured so that when the amount of untransferred toner collected into the toner collecting chamber exceeds the height of the return pipe, the untransferred toner is conveyed by the rotation of the conveyer screw to be returned into the toner storage chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.