Developer regulating member, developing device, process cartridge and electrophotographic image forming apparatus
US10627738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2019 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Jun 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/0058
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To provide a developer regulating member which can generate a uniform frictional charge even on a developer having a small size. A developer regulating member for regulating the thickness of the layer of a developer carried on the surface of a developer carrier, having: a regulating portion contacting with the developer, wherein the regulating portion includes a thermoplastic acrylic resin, and the thermoplastic acrylic resin has a first endothermic peak having a peak top at +50° C. or more and a second endothermic peak having a peak top at +20° C. or less on the differentiation curve of a DSC curve obtained when the temperature is raised from −100° C. to 150° C. at a rate of temperature rise of 20.0° C./min using differential scanning calorimetry (DSC).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.