| 摘要 |
In a developing assembly including a two-component developer container and a developer-carrying member, the developer-carrying member has at least a substrate and a resin coat layer formed on the substrate surface, and the resin coat layer contains at least a binder resin and solid particles for making the resin coat layer surface uneven. The solid particles satisfying an average circularity of 0.64 or more which is an average value of the values calculated according to the equationCircularity=(4xA)/{(ML)2xPI},(wherein ML represents the Pythagorean-method maximum length of a particle projected image, and A represents the projected area of a particle image), and the resin coat layer has surface roughness fulfilling specific conditions attributable to the solid particles. Also disclosed are an image-forming apparatus and a process cartridge which employ the developing assembly.
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