DEVELOPING APPARATUS PROCESS CARTRIDGE CONNECTION METHOD BETWEEN DEVELOPING FRAME AND DEVELOPER FRAME AND FLEXIBLE SEAL

摘要

A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes an electrophotographic photosensitive drum, a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive drum, The developer frame has a developing frame provided with a developer supply opening for supplying the developer accommodated in the developer accommodating portion to the developing member, A connection member provided with a connection member opening which is opposed to the developer supply opening, a drum frame for supporting the electrophotographic photosensitive drum, a movable frame supporting the developing member and movably connected to the developer frame by a flexible seal A phenomenon in which a developer storage opening for storing the developer that has passed through the developer supply opening is provided Wherein the flexible seal is provided with a first opening and a second opening in which the first opening is opposed to the developer supply opening and the connecting member opening and the second opening is opposed to the developer storage opening, Is attached on the connection member at the periphery of the first opening and attached on the development frame at the periphery of the second opening and the flexible seal is folded back so that the first opening and the second opening face each other, The ends of the surface of the sheet facing against each other are attached to each other.