Patent ID: 6175703
Filing Date: 2001-01-16
Classification: G03G

Abstract:
An image forming apparatus comprising:an image carrying member for carrying an electrostatic latent image, said image carrying member having a photosensitive layer on a conductive substrate;a developer for developing the electrostatic latent image carried on the image carrying member;a developer carrying member for carrying the developer and conveying it to a development area;a control member making contact with the developer carrying member for controlling the coating amount of the developer; anda cleaning member for cleaning the surface of the photosensitive layer of said image carrying member by making contact with the surface of the photosensitive layer of the image carrying member with a contact pressure of 0.15N (15 gf) to 0.89N (90 gf),wherein the photosensitive layer contains at least one kind of polycarbonate resins (I) having a viscosity average molecular weight of 1.5.times.10.sup.4 or less and at least one kind of polycarbonate resins (II) having a viscosity average molecular weight of more than 1.5.times.10.sup.4, the polycarbonate resin (I) is contained in 30% by mass to 95% by mass based on the total content of the resins (I) and (II),wherein the developer has a toner containing toner particles and external additives, andwherein the toner contains (a) 0.1% by mass to 5.0% by mass of a first fine powder with a number average particle size of 0.005 .mu.m to 3.00 .mu.m, and (b) 0.02% by mass to 2.00% by mass of an inorganic second fine powder containing 25% by mass to 90% by mass of a lubricant, as external additives.