| 摘要 |
A developing device adjoins a rotatably arranged electrostatic latent image support member, and is internally provided with a rotatably disposed developing roller confronting the electrostatic latent image support member, a cylindrically formed flexible filmy or outer sleeve member having a peripheral length longer than that of the developing roller and loosely mounted around it, a couple of first members for biasing the filmy member against the developing roller to form a slack of the filmy member at a location confronting the electrostatic latent image support member, and a second member for forming a toner layer on entire external surface of the filmy member.
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