Device for developing latent electrostatic image

Details Device for developing latent electrostatic image Device for developing latent electrostatic image

1984-07-02

1986-04-22

Grimley, A. T.

Photocopying

Including fiber optics

335 14D, G03G 1500

Patent

active

045838437

ABSTRACT:
A latent electrostatic image developing device comprising a developer receptacle for holding a developer composed of carrier particles and toner particles, a developer applicator means for holding part of the developer in the developer receptacle on its surface and carrying it to a developing zone, a developer agitating means, a toner particle receptacle for holding toner particles and a toner particle feed means for feeding the toner particles from the toner particle receptacle to the developer receptacle. The developer applicator means has a plurality of agitating blades extending in the widthwise direction, and a cut is formed in at least some of the agitating blades. The developing device also has a developer detector for detecting the consentration of the developer, and the developer detector detects the concentration of the excess of the developer removed from the developer applicator means. The developing device also has a partitioning plate for conducting the excess of the developer removed from the developer applicator means to the agitating means. The agitating means moves the developer from one side toward the other side, and the partitioning plate moves the developer removed from the developer applicator means form said other side toward said one side.

REFERENCES:
patent: 4276854 (1981-07-01), Fujita et al.
patent: 4324483 (1982-04-01), Tagawa et al.
Research Disclosure, Mar. 1977 "Magnetic Brush Developing Apparatus" pp. 28-29 James Williams.

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