Developer conveying device including a plurality of planar portions and a developing device and image forming apparatus provided with same
US8913925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2013 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | May 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0838
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developer conveying device includes a housing, a developer conveyance path and a conveying member. The developer conveyance path extends between a pair of wall portions. The conveying member includes a spiral member, an inner wall portion and shaft portions. The spiral member is formed by connecting spiral pieces, each forming one spiral turn, in a conveying direction of the developer and includes a hollow interior formed by the connected spiral pieces. The inner wall portion includes a plurality of planar portions which define the hollow interior of the spiral member and are connected at predetermined angles in a circumferential direction of the rotation of the conveying member. The shaft portions are arranged at opposite end parts of the spiral member, rotatably supported on the wall portions and serve as a rotary shaft for the rotation of the conveying member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.