Developer for developing electrostatic images and process for forming images

Claim 1

An image forming method which comprises developing electrostatic latent images formed on a latent image bearing member by means of a developer, wherein the latent image bearing member is an amorphous silicon photsensitive member; transferring the toner images thus developed on the latent image bearing member to a receiving member; fixing the transferred toner images on the receiving member; and cleaning the developer remaining on the latent image bearing member by means of a blade and/or a rubbing roller made of an elastic material; wherein the developer comprises: (a) a toner containing a colorant and a binder resin; (b) an inorganic fine powder A of a titanate compound having BET specific surface area determined by a nitrogen adsorption method of 0.8 to 15 m 2 /g, and (c) an inorganic fine powder B having BET specific surface area determined by a nitrogen adsorption method of 50 to 350 m 2 /g, provided that the inorganic fine powder B is not same as the inorganic fine powder A; wherein the binder resin is a non-linear, low melting-point polyester resin prepared from components containing: (i) a tricarboxylic or higher polycarboxylic acid contained in the acid component in an amount of 40 mole % or less and/or a trihydric or higher polyol contained in the alcohol component in an amount of 40 mole % or less, (ii) a phthalic acid type compound having two carboxyl groups in the acid component in an amount of 60 mole % or more, (iii) an alkyl substituted dicarboxylic acid contained in the acid component in an amount of 30 mole % or less and/or an alkyl substituted diol contained in the alcohol component in an amount of 30 mole % or less, and (iv) the balance being an etherified diphenol contained in the alcohol component.