Toner and method of producing the toner
US9594320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2015 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Jun 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08704
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a toner, including a toner particle having a core particle containing a binder resin and a colorant. The toner particle has a protrusion on a surface thereof, and the protrusion contains an olefin-based polymer having a cyclic olefin structure. When an average radius of curvature of the protrusion, an average particle diameter of the core particle, a projected area of the toner particle, and a projected area of the protrusion that are calculated from a planar projected image of an image of the toner particle photographed with a scanning electron microscope are represented by Rs (μm), Rc (μm), S, and S1, respectively, the average radius of curvature Rs of the protrusion is 0.004Rc μm or more and 0.100Rc μm or less, and an average of a surface coverage “100×S1/S” % is 5% or more and 90% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.