......DE....FRGB..IT..............................J0516419EUROPEAN PATENT APPLICATIONA319930331EP92304847.419920528enenen153962/9119910529JP19930331199313199212021992495 5G 03G 15/09 AdeEntwicklungsgerät und Entwicklerträgerelement dafürenDeveloping apparatus and developer carrying member thereforfrAppareil de développement et élément de transport de développateur pour cet appareil1 3CANON KABUSHIKI KAISHA00542361221103030-2, 3-chome, Shimomaruko, Ohta-kuTokyoJPGoseki, Yasuhide, c/o Canon Kabushiki Kaisha3-30-2 ShimomarukoOhta-ku, TokyoJPUnno, Akira, c/o Canon Kabushiki Kaisha3-30-2 ShimomarukoOhta-ku, TokyoJPFujishima, Kenji, c/o Canon Kabushiki Kaisha3-30-2 ShimomarukoOhta-ku, TokyoJPBeresford, Keith Denis Lewiset al00028273BERESFORD & Co. 2-5 Warwick Court High HolbornLondon WC1R 5DJGBDEFRGBIT19930331199313

A developing apparatus (D) for developing an electrostatic latent image includes a movable developer carrying member (2) for carrying a one component developer (5) to a developing zone (7) in which the developer (5) is supplied to an electrostatic latent image bearing member (1); a regulating member (6) for regulating a thickness of a layer of the developer to be carried to the developing zone (7) on the developer carrying member (2); wherein the developer carrying member (2) includes a coating layer (10) comprising a resin arterial in which fine graphite particles are disposed, and wherein this coating layer triboelectrically charges the developer, and the triboelectric charging capacity of this coating layer (10) is larger in the middle region of the developer carrying member (2) than in the end regions in its longitudinal direction.