| 摘要 |
PURPOSE:To reproduce a uniform picture, and to make a device small-sized by constituting a titled device so that plural developing means are supported and stored so as to be freely attachable and detachable and so as to be oscillatable in a developing means storing member, and plural developing means are pressed against a photosensitive body through the developing means storing member. CONSTITUTION:Control members 34a, 34b and 34c of a plate spring, etc. are provided so that each developing means 15 is oscillated around each shaft 33a, 33b, and 33c, and a spacer ring 31 and a photosensitive body 12 are brought into contact with each other and controlled. A developing means storing member 32 is provided on a developing means installing member 35 so as to be attachable and detachable to and from a device body. The developing means installing member 35 can be turned around a shaft 36, the developing means storing member 32 is moved by rotating an eccentric cam 37, and the spacer ring 31 of each developing means 15 is pressed against the photosensitive body 12. As a result, the distance between a developing roller 27 and the photosensitive body is kept constant. According to such constitution, a uniform picture can be reproduced and the device can be made small-sized. |
