| 摘要 |
PURPOSE:To prevent the deterioration of image quality in forming an image after leaving a developer for a long time by stirring the developer every previously set specific time. CONSTITUTION:The titled device has at least an electrostatic latent image carrier 1, an exposure means 2 for executing an exposure according to an image signal and forming a latent image on the electrostatic latent image carrier 1, developing means 8a and 8b for developing the latent image, developer stirring means 8c and 8d for stirring the developer equipped in the developing means 8a and 8b and a control means for making the developer stirring means 8c and 8d actuate every previously set specific time while the action of forming the image is not executed and the developer stirring means 8c and 8d are made to be actuated every previously set specific time while the action of forming the image is not executed. namely, the developer is not left in a still state for a long time while the action of forming the image is not executed. By actuating the developer stirring means every previously set specific time, the developer is properly stirred so as to mix air with the developer. Thus, the density of amount of the developer can be prevented from increasing and the image quality is not deteriorated because electrostatic charging and stirring can be fully executed in forming the images after leaving the developer.
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