Toner
US10996577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2019 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Dec 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09775
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Toner comprising a toner particle containing binder resin and colorant, wherein fine particles A (organosilicon polymer particles containing an organosilicon polymer) and fine particles B are present at the toner particle surface, the organosilicon polymer has structure in which Si and O are alternately bonded to each other, portion of Si in the organosilicon polymer has R1—SiO3/2 structure, and content of the fine particles A, proportion for area of peak originating with silicon having the structure, volume resistivity of the fine particles B, total coverage ratio of the toner particle surface by the fine particles A embedded in the toner particle (A1) and the fine particles A not embedded in the toner particle (A2), percentage for area occupied by the fine particles A2, content of the fine particles B in the toner, and percentage for area occupied by the fine particles B embedded in the toner particle are prescribed range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.