Developing device

Details Developing device Developing device

1983-12-14

1986-03-11

Grimley, A. T.

Photocopying

Including fiber optics

118658, G03G 1509

Patent

active

045752206

ABSTRACT:
A device for developing an electrostatic latent image formed on a photosensitive member includes a developing sleeve which is driven to rotate in a predetermined direction and a pressure blade which is kept pressed against the sleeve to form a thin film of uniformly charged toner so as to apply for the latent image for development. In accordance with the present invention, the forward end portion of the pressure blade is specifically shaped such that a projection having the width which substantially corresponds to the width of an image forming area of the photosensitive member is provided to extend beyond a contact line between the sleeve and the blade thereby allowing to form the thin film of toner whose width substantially corresponds to the image forming area of the photosensitive member, thereby preventing the waste of toner from occurring.

REFERENCES:
patent: 3822139 (1974-07-01), Westdale
patent: 4425382 (1984-01-01), Tajima
patent: 4445771 (1984-05-01), Sakamoto et al.

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