Developing unit for an image forming apparatus

Details Developing unit for an image forming apparatus Developing unit for an image forming apparatus

2007-12-18

2007-12-18

Tran, Hoan (Department: 2852)

Electrophotography

Image formation

Development

C399S275000

Reexamination Certificate

active

11183774

ABSTRACT:
A developing unit for an image forming apparatus using a two-property developer that induces a magnetic attraction force based on the slope of a curved line representing the magnetism of each magnetic pole of a magnetic field generating part of a developing roller and determining a developer-regulating position where the changes of the magnetic attraction force are minor based on the magnetic attraction force in order to assure stable transfer of the developer to a photoconductive medium.

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patent: 7139517 (2006-11-01), Enoki et al.
patent: 7171145 (2007-01-01), Takeuchi et al.
patent: 7208254 (2007-04-01), Yuasa et al.
patent: 08-286518 (1996-11-01), None
patent: 10-048958 (1998-02-01), None
patent: 2002-116626 (2002-04-01), None

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