Developing device and image forming apparatus

Details Developing device and image forming apparatus Developing device and image forming apparatus

2011-03-01

2011-03-01

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S284000

Reexamination Certificate

active

07899373

ABSTRACT:
A developing device using a magnetic mono-component developing agent includes a rotary sleeve that accommodates a stationary magnet, and a toner layer thickness regulating member that regulates a thickness of a toner layer formed on the rotary sleeve. The toner layer thickness regulating member includes a blade formed of a plate-like member made of a magnetic material and a magnet attached to the blade on a side upstream in a rotation direction of the rotary sleeve. The magnet is disposed in such a manner that a direction of a magnetic field generated in a portion of the magnet on a side of the rotary sleeve is almost in parallel with the rotation direction of the rotary sleeve.

REFERENCES:
patent: 4637706 (1987-01-01), Hosoi et al.
patent: 5072690 (1991-12-01), Ishikawa et al.
patent: 6035169 (2000-03-01), Miyake et al.
patent: 2003-167426 (2003-06-01), None

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