Start developer and method of controlling toner density

Details Start developer and method of controlling toner density Start developer and method of controlling toner density

1991-05-13

1993-05-25

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430108, 430110, 430137, G03G 900, G03G 500

Patent

active

052139352

ABSTRACT:
The present invention provides a start developer wherein an output voltage of a sensor in the start developer having a particular toner density is not less than 0.9 times an output voltage of the sensor in a developer having the same toner density in a time period during which image characteristics are stabilized after repeating image formation by an image forming apparatus and is less than a threshold value at which the supply of toner is started and a method of controlling the toner density using the start developer. According to the present invention, good images can be always formed irrespective of the variation in characteristics between sensors in image forming apparatuses and from the early stage of image formation to the stable time period.

REFERENCES:
patent: 5077158 (1991-12-01), Nakano
patent: 5077168 (1991-12-01), Ogami et al.
patent: 5077169 (1991-12-01), Inoue et al.
Japanese Patent Publication No. 2-120879.

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