Image-forming apparatus, image-forming method, developing apparatus, and developing method
US9442416B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2014 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0812
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a developing apparatus, including toner for developing an electrostatic latent image, a toner carrier for carrying the toner, and a regulating member for regulating a layer thickness of the toner carried by the toner carrier. The toner carrier is placed to be brought into contact with the electrostatic latent image bearing member. The toner carrier includes a substrate, an elastic layer, and a surface layer containing a urethane resin. The urethane resin has a partial structure derived from a reaction between a compound represented by the structural formula (1) and a polyisocyanate. The toner contains toner particles each containing a binder resin and a magnetic material, and inorganic fine particles. The toner has a weight average particle diameter (D4) of from 9.5 μm to 14.0 μm. The toner has a porosity of 50 or more and 56 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.