Developer recovering device for electrostatic image reproducing system
US4403852A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Dec 2, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic image reproducing system includes a developing unit, a rotatable photosensitive drum, a cleaning unit, and a developer recovering device for recycling developer containing a magnetic ingredient from the cleaning unit to the developing unit. The developer recovering device includes a developer conveying device including a revolving element made of a non-magnetic material and having an outer surface, and a plurality of magnets arranged adjacent the inner surface of the circumference of the revolving element, and a casing encircling at least a portion of the outer surface of the revolving element with a given spacing therebetween for receiving developer containing the magnetic ingredient. The revolving element is arranged to pick up developer from the casing by the magnetic power of the magnets, and the picked up developer is conveyed to the developing unit by the revolving element as ears of developer on the revolving element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.