Electrophotographic cleaning apparatus
US4279499A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1979 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Sep 4, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/0005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A magnetic brush cleaning apparatus which includes a magnetic brush roll having a plurality of magnets mounted therein, a reservoir for carrier particles closely spaced from the magnetic brush roll, a pickoff for removing a part of the carrier particles constituting the magnetic brush during the rotation of the magnetic brush roll, and an exit at the lower end of the reservoir for directing the carrier particles onto the magnetic roll, so that the reservoir, the pickoff, the exit and the magnets cooperate to cause the circulation of carrier particles between the magnetic brush roll and the reservoir whereby a portion of the magnetic brush is continuously removed and reformed during the rotation of the magnetic brush roll. In another embodiment, the reservoir, the pickoff and the exit are used only during servicing of the cleaning device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.