| 摘要 |
PURPOSE:To produce the start developer which can form always stable images by continuing agitating and mixing further after an electrostatic charge quantity attains saturation by the agitating and mixing, thereby adjusting the electrostatic charge quantity of the start developer to 65 to 90% of the satd. electrostatic charge quantity. CONSTITUTION:The agitating and mixing are further continued after the electrostatic charge quantity is satd. by the agitating and mixing, by which the electrostatic charge quantity of the start developer is adjusted to 65 to 90% of the satd. electrostatic charge quantity at the time of producing the start developer of a two-component system by compounding toners and carriers at prescribed ratios and agitating and mixing the mixture. Namely, the sensor output value with respect to a toner concn. remains nearly constant from the initial period of image formation to the stable period of the image formation when the electrostatic charge quantity after the saturation of the start developer is adjusted to 65 to 90% of the satd. electrostatic charge quantity. The sensor is eventually able to recognize always the exact toner concn. The toner replenishment from the initial period of image formation to the stable period of the image formation is, therefore, exactly executed and the generation of various kinds of image defects is prevented. |
