Electrophotography – Control of electrophotography process – Control of developing
Reexamination Certificate
2006-05-30
2006-05-30
Ngo, Hoang (Department: 2852)
Electrophotography
Control of electrophotography process
Control of developing
C399S030000, C399S058000, C399S237000
Reexamination Certificate
active
07054569
ABSTRACT:
A wet electrophotographic image forming machine that informs a user of a timing for replacing development cartridges. The image forming machine comprises a control section for sensing the condition of the developer stored in one or more developer housings on the basis of a measured electric current flowing between one or more developer feeding members and one or more developer application members via the developer provided therebetween, and a display section for externally displaying the developer condition according to a signal from the control section. The control section evaluates the magnitude of the electric current and provides a signal to the control section for display if there is a developer amount or concentration deficiency.
REFERENCES:
patent: 6687477 (2004-02-01), Ichida et al.
patent: 6744996 (2004-06-01), Brenner
Kim Jong-woo
Park Geun-yong
Shin Joong-gwang
Song Eun-ah
Ngo Hoang
Roylance Abrams Berdo & Goodman L.L.P.
Samsung Electronics Co,. Ltd.
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