Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
US10527962B2 · kind B2 · utility
1Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2018 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic charge image developing toner includes: a toner particle having average circularity of 0.91 or more and 0.98 or less, a silica particle externally added to the toner particle, and a strontium titanate particle that is externally added to the toner particle, that has an average primary particle diameter of 10 nm or more and 100 nm or less, that has average primary particle circularity of 0.82 or more and 0.94 or less, and circularity that becomes 84% of accumulation of the primary particle of more than 0.92.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.