Toner
US11880163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2021 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | May 11, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09708
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner includes toner particles. The toner particles each include a toner mother particle and an external additive attached to the surface of the toner mother particle. The external additive includes specific external additive particles. The specific external additive particles have a number average primary particle diameter of at least 30 nm and no greater than 305 nm. The specific external additive particles include antimony-doped tin oxide particles or indium tin oxide particles. A ratio (MSb/(MSn+MSb)) of a mass (MSb) of an antimony atom to a total of the mass (MSb) of the antimony atom and a mass (MSn) of a tin atom in the antimony-doped tin oxide particles is at least 0.04 and no greater than 0.46.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.