Roylance, Abrams, Berdo & Goodman, LLP
Electrophotographic image forming apparatus including a developing roller for a developing unit using non-magnetic mono-component toner, and developing method using the same
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.
Samsung Electronics Co., Ltd.
G G
G03G G03G
additional inventional
Koichi Jun-Ho
Tsunemi Kim