Electrophotographic image forming apparatus including a...

Details Electrophotographic image forming apparatus including a... Electrophotographic image forming apparatus including a...

2006-03-08

2009-06-02

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

Reexamination Certificate

active

07542705

ABSTRACT:
An electrophotographic image forming apparatus is provided which includes an image receptor on which an electrostatic latent image is formed. A developing unit develops the electrostatic latent image by supplying non-magnetic mono-component toner to the electrostatic latent image and includes a developing roller which faces the image receptor. A trail type regulating blade is installed to form a uniform toner layer on the developing roller. In the electrophotographic image forming apparatus, the rate of the amount of toner particles having a diameter of not more than about half of a median value of a volume-diameter distribution of the toner is not more than about 15% in a number-diameter distribution.

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