| 摘要 |
PURPOSE:To simultaneously attain superior reproducibility of a line image and high density of a solid image by rendering a lower dynamic resistivity than that of a carrier to a developer. CONSTITUTION:A two-component type developer is composed of a magnetic carrier and a toner and a lower dynamic resistivity than that of the carrier is rendered to the developer. Since the carrier has high resistance and the developer has lower resistance than the carrier, it is supposed that development proceeds under such conditions as to produce a significant edge effect of an electrostatic latent image but to relieve electric charges in a relatively short time. When fine lines are reproduced, they are faithfully reproduced by the edge effect. When a solid image is developed, electric charges are relatively rapidly relieved and the amt. of the toner stuck is increased to increase the density of the solid image. |
