Developing apparatus having multi-part regulating member, process cartridge and electrophotographic image forming apparatus
US10073374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2017 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0812
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus includes a developer carrying roller rotatable in a first rotating direction, and a developer regulating member which controls a thickness of a developer layer carried on a surface of the developer carrying roller. The developer regulating member has a developer layer thickness regulating part abutting with the surface of the developer carrying roller and a projecting part. The projecting part extends towards an upstream side in the first rotating direction from the abutting part, and a non-contacting gap is formed between the projecting part and the surface of the developer carrying roller. The projecting part has a concave shape at a side facing the developer carrying roller that follows an arc-shaped surface of the developer carrying roller and forms a portion having a gap width H and a continuous length L.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.