Image forming apparatus including device for outputting...

Electrophotography – Control of electrophotography process – Control of developing

Reexamination Certificate

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Details

C399S027000

Reexamination Certificate

active

07970306

ABSTRACT:
An image forming apparatus includes a developing device for developing a latent image formed on an image bearing member on the basis of image information, into a developed image with a developer, the developing device including a developer accommodating portion for accommodating the developer and a stirring member for stirring the developer in the developer accommodating portion; an optical remaining amount detecting device for detecting a remaining amount of the developer in the developer accommodating portion, by passing light through an inside of the developer accommodating portion; a consumption amount calculation device for calculating information relating to a consumption amount of the developer on the basis of the image information; and an outputting device for outputting an information signal indicative of a developer remainder which is either one of a developer remainder based on a detection result of the optical remaining amount detecting device and a developer remainder based on the information relating to the consumption amount provided by the consumption amount calculation device, selected in accordance with information relating to continuous drive time of the stirring member after start of drive thereof during image forming operation.

REFERENCES:
patent: 5649264 (1997-07-01), Domon et al.
patent: 7095964 (2006-08-01), Koyama et al.
patent: 2006/0233560 (2006-10-01), Harada et al.
patent: 2007/0206966 (2007-09-01), Komiya et al.
patent: 5-6092 (1993-01-01), None
patent: 2001-318566 (2001-11-01), None

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