Developing device
US9405229B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2016 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Jan 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0893
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes a developer carrying member, a first chamber, a second chamber, a first feeding member, and a second feeding member. The second feeding member includes first to third spiral portions and a disk portion. The disk portion includes a projected portion. When the disk portion is seen in an axial direction of the second feeding member, on the basis of a line connecting a rotation center of the disk portion and an upstream end portion of the third spiral portion with respect to a feeding direction of the third spiral portion, the projected portion is provided within a range from a position deviated by 90 degrees toward a downstream side with respect to a rotational direction of the disk portion to a position deviated by 30 degrees toward an upstream side with respect to the rotational direction of the disk portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.