Development device, and image forming apparatus
US9217957B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2014 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Jul 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0891
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A development device includes a developer container that can store developer, a conveyance portion arranged rotatable in a storage portion formed with a discharge opening, and conveying the developer toward an end, on which the discharge opening is formed, in the longitudinal direction, a conveyance screw including a return screw that applies force of pushing back a flow of the developer, which moves toward the discharge opening, in the opposite direction, and a magnet member provided in the developer container in the vicinity of a level of the developer on at least the return portion. A magnetic brush formed by the magnetic force of the magnet member interferes with the return portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.