| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device, a printer and an image forming processing unit where a contact member for triboelectric toner on a developing roller need not be provided and by which a high-quality toner image having neither surface staining nor the insufficiency of image density can be formed. SOLUTION: This developing device is equipped with a developing roller 402 carrying the toner on its surface and feeding it to a developing area A1 opposed to a photoreceptor 1, and a magnetic brush roller 403 carrying two- component developer 12 including the toner 10 and magnetic particles 11, feeding it to a toner supply area A2 opposed to the roller 402 and supplying only the toner 10 from the developer 12 to the roller 402. The toner charged amount number distribution of the toner carried on the roller 402 and fed to the area A1 is different from that of the toner in the developer 12 carried on the roller 403. |
