Image forming apparatus having a developing apparatus which incl

Electrophotography – Having particular structure

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G03G 1509

Patent

active

055722989

ABSTRACT:
Disclosed is an image forming apparatus capable of performing an image forming operation in both a horizontal position and an upright position. This image forming apparatus comprises a rotary endless latent image carrier; image forming unit for forming an electrostatic latent image on the latent image carrier; developing unit for developing the electrostatic latent image on the latent image carrier with a powdery developer, the developing unit having a developing room, developing rollers provided in the developing room for supplying the powdery developer to the latent image carrier, a toner supply room for supplying toners, toner supply roller provided in the toner supply room and rotatable to supply the toners to the developing room, and a partition member for partitioning the developing room and the toner supply room and forming a toner supply passage for supplying the toners to the developing room; and transfer unit for transferring the developed image on the latent image carrier to a sheet.

REFERENCES:
patent: 4320958 (1982-03-01), Fantuzzo
patent: 4676192 (1987-06-01), Yugo
patent: 5134441 (1992-07-01), Nagata et al.
patent: 5188057 (1993-02-01), Ishikawa et al.
patent: 5307126 (1994-04-01), Kurita
patent: 5387964 (1995-02-01), Kanno et al.

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