Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2006-12-12
2006-12-12
Gray, David M. (Department: 2852)
Electrophotography
Diagnostics
Consumable
Reexamination Certificate
active
07149439
ABSTRACT:
A method and device for estimating toner concentration in a two-component developer consisting of toner and carrier for an electrophotographic image forming apparatus, and an image forming apparatus equipped with such device. The above method and device calculate an amount of toner charge from data detected by a transferred toner amount sensor, compensate the toner charge based on environmental humidity data and cumulative use period data of the image forming apparatus, and estimate toner concentration. The image forming apparatus equipped with the above device exerts control to predict toner consumption from the estimated toner concentration, supply toner to a developing unit according to the predicted toner consumption, and maintain the toner concentration in the developer at predetermined concentration.
REFERENCES:
patent: 4666801 (1987-05-01), Kimura et al.
patent: 5708918 (1998-01-01), Okuno et al.
patent: 5724627 (1998-03-01), Okuno et al.
patent: 5826136 (1998-10-01), Saiko et al.
patent: 5920748 (1999-07-01), Kawai et al.
patent: 5999761 (1999-12-01), Binder et al.
patent: 6798999 (2004-09-01), Itagaki et al.
patent: 8-248750 (1996-09-01), None
patent: 9-106168 (1997-04-01), None
patent: 2002-162795 (2002-06-01), None
Akashi Hironori
Harashima Takashi
Hirata Katsuyuki
Isono Tatsuya
Sakai Tetsuya
Gray David M.
Konica Minolta Business Technologies Inc.
Roth Laura K.
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