Image forming apparatus and process cartridge

Abstract

An image forming apparatus includes an electrophotographic photoreceptor that has a photosensitive layer constituting a surface, a charging device that charges the surface of the electrophotographic photoreceptor, an electrostatic charge image forming device that forms an electrostatic charge image on the charged surface of the electrophotographic photoreceptor, a developing device that contains a developer and develops the electrostatic charge image formed on the surface of the electrophotographic photoreceptor by the developer as a toner image, a transfer device that transfers the toner image formed on the surface of the electrophotographic photoreceptor to a surface of a recording medium, and a cleaning device that has a cleaning blade coming into contact with the surface of the electrophotographic photoreceptor and cleaning at least residual toner particles on the surface of the electrophotographic photoreceptor, in which the photosensitive layer in the electrophotographic photoreceptor contains a polyester resin (1) that has a dicarboxylic acid unit (A) represented by Formula (A) and a diol unit (B) represented by Formula (B), a tip angle θ1 of a contact portion of the cleaning blade coming into contact with the electrophotographic photoreceptor is 95° or more and 110° or less, a 100% modulus of the cleaning blade at the contact portion with the surface of the electrophotographic photoreceptor at 23° C. is 13 MPa or more and 22 MPa or less, and an action angle θ of the cleaning blade with respect to the surface of the electrophotographic photoreceptor is 8° or more and 30° or less, in Formula (A), ArA1 and ArA2 are each independently an aromatic ring that may have a substituent, LA is a single bond or a divalent linking group, and nA1 is 0, 1, or 2, in Formula (B), ArB1 and ArB2 are each independently an aromatic ring that may have a substituent, LB is a single bond, an oxygen atom, a sulfur atom, or —C(Rb1)(Rb2)—, and nB1 is 0, 1, or 2, where Rb1 and Rb2 are each independently a hydrogen atom, an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group having 6 or more and 12 or less carbon atoms, or an aralkyl group having 7 or more and 20 or less carbon atoms, and Rb1 and Rb2 may be bonded to each other to form a cyclic alkyl group.

Dependencies are inferred from the claim text.