Patent ID: 6334038
Filing Date: 2001-12-25
Classification: G03G

Abstract:
An electrophotograph development apparatus for developing an electrostatic latent image formed on an electrostatic latent image carrier body with magnetic developer, comprising:a developer carrier body having a magnetic roller; anda thin layer forming member for forming said magnetic developer on said developer carrier body into a thin layer,wherein a magnetic pole of said magnetic roller is disposed at a position of a .theta. degree in an upper stream side relative to a rotational direction of said developer carrier body from a contact point of said thin film forming member and said developer carrier body, and .theta. meets: 0 degree.ltoreq..theta..ltoreq.10 degree,wherein a relation between a surface roughness Rz' of said developer carrier body and a surface roughness Rz of said thin layer forming member is represented in the following equation:-10 .mu.m.ltoreq.(Rz-Rz').ltoreq.5 .mu.m.