Toner and method for manufacturing toner
US9606462B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jul 31, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09733
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To provide a toner from which an image having a stable image density can be obtained with reduced occurrence of pollution of members, even when a toner container is filled with a larger amount of toner than a conventional amount for long-term use. A toner including a toner particle and an external additive containing an organic-inorganic composite fine particle and an inorganic fine particle A; wherein the organic-inorganic composite fine particle includes a resin particle and an inorganic fine particle B, the resin particle has a surface with a convex derived from the inorganic fine particle B; has a specific number average particle diameter (D1) and a specific shape factor SF-2; and has a specific fixed state to the toner particle; the organic-inorganic composite fine particle has a specific unit diffusion index on the toner particle surface; the inorganic fine particle A has a specific BET specific surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.