Electrophotography – Image formation – Development
Reexamination Certificate
2011-01-04
2011-01-04
Porta, David P (Department: 2884)
Electrophotography
Image formation
Development
Reexamination Certificate
active
07865117
ABSTRACT:
In a developer station for a printer or copier, a rotating developer roller is provided having a mixture of toner particles and ferromagnetic carrier particles accumulated on a surface of the developer roller as a layer, and a transfer zone at which the toner particles are transferred away from the developer roller. A smoothing device is provided with a smoothing element arranged before the transfer zone, the smoothing element being charged with a mechanical tension in a rest state of the developer roller and designed such that it exerts a force on and over an entire width of the layer formed by the mixture of the toner particles and the carrier particles present on the developer roller and smoothes the layer before the transfer of the toner particles. Within the developer roller at least one magnet is provided. The smoothing element comprises a magnetizable material attracted toward said at least one magnet to create said mechanical tension.
REFERENCES:
patent: 4226524 (1980-10-01), Hashimoto
patent: 4487496 (1984-12-01), Baier et al.
patent: 4628860 (1986-12-01), Hosoya et al.
patent: 4656365 (1987-04-01), Billings
patent: 4990958 (1991-02-01), Brewington et al.
patent: 5234786 (1993-08-01), Ueda et al.
patent: 5845183 (1998-12-01), Sugiyama et al.
patent: 5863329 (1999-01-01), Yamanouchi
patent: 6148167 (2000-11-01), Komakine et al.
patent: 2001/0055501 (2001-12-01), Inoue et al.
patent: 2005/0036806 (2005-02-01), Hollig et al.
patent: 31 18 995 (1982-11-01), None
patent: 692 14 033 (1993-01-01), None
patent: 101 52892 (2003-05-01), None
patent: 0 138 458 (1985-04-01), None
patent: 0 394 228 (1991-07-01), None
patent: 0 522 813 (1996-09-01), None
patent: WO 89/08285 (1989-09-01), None
Höllig Uwe
Köfferlein Florian
Lela Admir
Selinger Ralf
Gaworecki Mark R
Oce Printing Systems GmbH
Porta David P
Schiff & Hardin LLP
LandOfFree
Developer station with smoothing device and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Developer station with smoothing device and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developer station with smoothing device and method for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2711685