| 摘要 |
Provided are a developing roller 1 having an elastic layer 3 formed on an outer circumferential face of a shaft 2 and a coating layer 4 formed on an outer circumferential face of the elastic layer 3, wherein the coating layer 4 is composed of first coating layers 4A that are formed at respective edges across the elastic layer, and a second coating layer 4B formed between the first coating layers 4A, and wherein the first coating layers contain a resin obtained through a reaction of a polyol with a silane-coupling agent, fluororesin particles, and an electric conductivity agent; and the second coating layer contains a urethane resin, an ionic liquid, an electric conductivity agent, and filler particles; and a development apparatus and an image-forming device having the developing roller. The provided are capable of keeping the image quality high and of arresting leakage of the toner satisfactorily. |
