Toner for electrophotography with specified fine particles added externally
US5759731A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1997 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jun 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0821
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to (1) a toner with inorganic fine particles added externally, the inorganic fine particles having a specified mean particle size and a specified particle size distribution, and (2) a toner having specified particle size, specific gravity, and angle of toner repose, and a developing agent comprising the toner and a carrier. The toner of the present invention has good environmental stability, non-sticking characteristic, and good storage stability under hot conditions, and is capable of forming good images without aggregation noise. Further, the toner is not liable to produce toner dust and does not damage the photoconductor. The toner is particularly suitable for full-color image formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.