| 摘要 |
PURPOSE: To uniformly maintain the toner sticking amount to an electrostatic latent image and to obtain the stable image quality, by non-fixedly holding the developer amount control member in between the press contact point held in press contact with the sleeve and the butting point for butting to the hopper side. CONSTITUTION: The leaf spring member 7a is fitted with its one end into the slit 16 of the holding part 15, and the position and the direction of the holding part 15 and slit 16 is respectively specified, so that the developer amount control member 7 is bent in a state of holding the elastic member 7b in contact with the sleeve 6. Then, the control member 7, non-fixedly held between the sleeve 6 and the hopper 3 in a state that the base end part of the control member 7 comes in contact with the hopper 3 side and the tip end part comes in press contact with the sleeve 6, is caused to bend at a specified angle, therefore the specified butting pressure fixed by the spring constant of the control member 7, the bending angle or the like is imparted in between the tip end part of the control member 7 and the sleeve 6. Therefore, the developer of the specified thickness is formed on the sleeve 6, and the generation of waviness in the longitudinal direction of the control member 7 is prevented, even if the control member 7 and hopper 3 is severally provided with different coefficient of thermal expansion. |
