Image forming method,申请号EP19970309550-传众专利搜索

Image forming method

申请公布号：EP0844536(A2)

申请号：EP19970309550

申请日期：1997.11.25

申请公布日期：1998.05.27

申请人：

CANON KABUSHIKI KAISHA

发明人：OKADO, KENJI;UGAI, TOSHIYUKI;FUJITA, RYOICHI;YOSHIZAKI, KAZUMI

分类号：G03G15/02;G03G13/02;(IPC1-7):G03G15/02

主分类号：G03G15/02

摘要：<p>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 10<8> to 10<15> OMEGA .cm; 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 10<4> to 10<9> OMEGA .cm; the toner has, as an external additive, fine particles having a volume resistivity C of from 10<7> to 10<11> OMEGA .cm; the magnetic carrier has a volume resistivity D1 of from 10<9> to 10<15> OMEGA .cm; and the developer carrying member has a surface layer having a volume resistivity D2 of from 10<9> to 10<15> OMEGA .cm. The resistivities A, B, C, D1 and D2 stasisfy the following conditions: B < C < A < D1 or B < C < A < D2. <IMAGE></p>