| 摘要 |
An electrophotographic processor containing an image forming apparatus such as a laser printer, a copying machine, and a facsimile machine, is capable of regulating the thickness of toner layer formed on a developing roller so as to be a mono-layer. The electrophotographic image forming apparatus includes: a photosensitive drum rotating at a constant speed; a charging roller for charging a surface of the photosensitive drum; a developing roller for forming a toner image on a electrostatic latent image of the photosensitive drum by transferring toner from the developing roller to the drum; a supplying roller for supplying toner agitated by an agitator; and a doctor blade for regulating the toner layer on a developing roller device so as to be a uniform thickness. The doctor blade contacts the surface of the developing roller at a specific edge thereof, and is affixed to a bracket for supporting the doctor blade at an upper portion thereof, the bracket being affixed to a frame of a developing unit. The specific edge is disposed in a direction which is opposite to a direction of transfer of the toner from the developing roller to the drum.
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