Cleaning blade and electrophotographic apparatus using the same

摘要

A cleaning blade 10 mainly has polyurethane resin, which is mainly installed in an electrophotographic apparatus and rubs and eliminates residual toners control chipping of a top end 70 of the cleaning blade and reduces an abrasion of a photosensitive drum 50. The cleaning blade is prepared by mixing and hardening at least prepolymer which is obtained from butylene adipate polyester polyol, hexylene adipate polyester polyol and polyisocyanate and the hardening agent including low molecular weight polyol and potassium acetate so that a mol ratio ( alpha value) of hydroxyl group to isocyanate group becomes not less than 0.7 and not more than 0.9.