Developing device including a guide portion and an image forming apparatus provided with the same
US9846388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2017 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Mar 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes a storage portion, a developer carrying member, a stirring portion, a layer thickness restricting portion, and a guide portion. The guide portion is disposed between the stirring portion and the layer thickness restricting portion. The stirring portion faces the developer carrying member with a first gap between them. The layer thickness restricting portion faces the developer carrying member with a second gap between them. The guide portion includes a first guide surface and a second guide surface. On the first guide surface, convex portions or concave portions are formed. The first guide surface faces the stirring portion with, between them, a third gap that is a passage through which the developer passes toward the first gap. The second guide surface faces the developer carrying member with, between them, a fourth gap that is a passage through which the developer passes toward the second gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.