| 摘要 |
An image forming method is disclosed in which a contact charging means is brought into contact with a latent image bearing member to electrostatically charge the latent image bearing member on which electrostatic latent images are formed and developed with a one component type or two component type developer to form toner images, using a developing assembly provided with a developing container and a developer carrying member. The one component developer is comprised of toner particles. The two component type developer is comprised of toner particles and a magnetic carrier. The toner particles of the one component type and two component type developers contains fine particles as an external additive. The latent image bearing member has a surface layer having a volume resistivity A of from 108 to 1015 OMEGA xcm; the contact charging means comprises an assembly for electrostatically charging the latent image bearing member by applying a voltage to a charging member having a volume resistivity B of from 104 to 109 OMEGA xcm; the toner has, as an external additive, fine particles having a volume resistivity C of from 107 to 1011 OMEGA xcm; the magnetic carrier has a volume resistivity D1 of from 109 to 1015 OMEGA xcm; and the developer carrying member has a surface layer having a volume resistivity D2 of from 109 to 1015 OMEGA xcm. The resistivities A, B, C, D1 and D2 stasisfy the following conditions: B<C<A<D1 or B<C<A<D2.
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