DEVELOPER HOUSING UNIT, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

摘要

A developer bag 16 of which opening is seal by a sealing member 19 includes a superposed multi-layer sheet structure portion 16g, of a sheet 16u or sheet 16s, for forming a developer accommodating portion, and a first fixing portion 16d fixed to a fixing portion 18c of a frame 18 is provided at the multi-layer sheet structure portion 16g, and a interlayer bonding portion 16h between the superposed layers is provided between the first fixing portion 16d of the multi-layer sheet structure portion 16g of the developer accommodating portion. By this, an unsealing characteristic of the sealing member for sealing the opening of a flexible container for accommodating a developer is improved.