Developing device having low turbulence developer flow
US6266507A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes: a multiple number of magnetic poles fixed at predetermined positions; a developer sleeve which rotatably encloses the magnetic poles; a doctor blade for regulating the thickness of the developer layer on the developer sleeve; and an agitating roller arranged adjacent to the developer sleeve and agitating and supplying the developer. In this arrangement, the magnetic poles include a development magnetic pole for developing the static latent image on the photoreceptor drum, and a developer conveyance magnetic pole positioned downstream, with resect to the rotational direction of the developer sleeve, of the development magnetic pole. A magnetic element is arranged opposing the developer sleeve outside the developer flow path where the magnetic field of the developer conveyance pole is not effective.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.