Image forming apparatus replenishing toner by detecting the rati

Details Image forming apparatus replenishing toner by detecting the rati Image forming apparatus replenishing toner by detecting the rati

1993-03-02

1994-11-15

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118688, 355208, G03G 2100

Patent

active

053653190

ABSTRACT:
The present invention provides an image forming apparatus wherein first information corresponding to toner density of two-component developer including toner and carrier particles is detected by a first sensor, second information corresponding to density of the two-component developer is detected by a second sensor, and an amount of toner to be replenished to the two-component developer is controlled on the basis of outputs of the first and second sensors.

REFERENCES:
patent: 4226525 (1980-10-01), Sakamoto et al.
patent: 4589762 (1986-05-01), De Schamphelaere et al.
patent: 4942431 (1990-07-01), Tada
patent: 4969011 (1990-11-01), Faull et al.
patent: 5057870 (1991-10-01), Aoki
patent: 5081498 (1992-01-01), Bares
patent: 5124751 (1992-06-01), Fukui et al.
patent: 5142332 (1992-08-01), Osawa et al.
patent: 5146274 (1992-09-01), Hattori et al.

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