| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a high-quality image by an electrophotographic image forming device. SOLUTION: This device is provided with a photoreceptor drum 20, a laser scanner unit 30 forming an electrostatic latent image on the drum 20, a developing roller 56 carrying toner 53, forming a nip part between the drum 20 by being moved in an opposite direction to the moving direction of the drum 20 while being brought into contact with the drum 20 and forming a toner image by developing the electrostatic latent image at the nip part by using the toner 53 and a transfer roller 60 transferring the formed toner image on a paper P. Then, the surface part of the drum 20, the surface part of the roller 56 and the toner 53 are respectively constituted of such a material that the electrostatic charge quantity Q2 of the toner 53 on the drum 20 after the developing action becomes larger than the electrostatic charge quantity Q1 of the toner 53 on the roller 56 before the developing action by being mutually rubbed at the nip part when the developing action is executed by the roller 56.</p> |
