Developed bead pick-off device
US5404215A · kind A · utility
7Cited by
14References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1992 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Nov 18, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/095
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To remove ferromagnetic carrier beads from the surface of a photoreceptor leaving a development station in an electrophotographic machine, the carrier beads are magnetically attracted to the surfaced of an elongated, rotating cylinder. The cylinder surface is provided with a raised spiral thread to create a material conveying auger operating to axially convey the attracted beads to a cylinder end portion beyond a side edge of the photoreceptor, where the carrier beads fall into a sump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.