Developing apparatus

Details Developing apparatus Developing apparatus

1991-09-30

1993-02-16

Gellner, Michael L.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

355215, 355251, G03G 1509

Patent

active

051873265

ABSTRACT:
A developing apparatus includes a container for containing a developer including magnetic particles. A rotatable developer carrying member is disposed in the container and faced to an image bearing member, for carrying the developer to a developing zone. A magnet is provided in the developer carrying member, and a magnetic sealing member is disposed adjacent to and in a rotational direction of the developer carrying member in a region inside of the container adjacent a longitudinal end of the developer carrying member, wherein the magnetic sealing member cooperates with the magnet to form a magnetic field effective to form a magnetic brush of the developer between the magnetic sealing member and the developer carrying member, and wherein an outer end, with respect to the longitudinal direction of the developer carrying member, of the magnetic sealing member is disposed in a range between 2 mm outwardly away from an end of the magnet and 1 mm inwardly away therefrom.

REFERENCES:
patent: 3982498 (1976-09-01), Wilcox
patent: 4373468 (1983-02-01), Suda et al.
patent: 4387664 (1983-06-01), Hosono et al.
patent: 4616919 (1986-10-01), Adley et al.
patent: 4843421 (1989-06-01), Fox
patent: 5084733 (1992-01-01), Katoh et al.

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