Apparatus and method for creating a developer housing seal via a curtain of carrier beads
US5138382A · kind A · utility
8Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Mar 27, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/095
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for sealing a housing to prevent the escape of airborne material therefrom. Carrier beads are captured and suspended in a magnetic field extending across a region adapted to be sealed, forming a curtain of carrier beads for preventing the escape of airborne material, including toner particles, therepast. The carrier bead curtain is continuously collapsed and regenerated as carrier beads are captured, accumulated, and deposited into the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.