| 摘要 |
An electrostatic latent image developing apparatus for use in a copying machine or the like, which comprises a transport and supply device for circulating and transporting a developer mix while mixing and stirring the developer mix, towards a developing device for developing an electrostatic latent image formed on an electrostatic latent image carrier, a toner replenishing device for replenishing the transport and supply device with a new toner material, a toner concentration detector for detecting a toner concentration of the developer mix, a drive control for the setting of a toner concentration reference value which is operable to at least stir the developer mix separately from normal developing operation, a memory for storing a reference value detected by the detector at the time of driving toner concentration reference value setting, and a toner replenishment control for comparing a detection value of the detector with the toner concentration reference value during the normal developing operation and for actuating the toner replenishing device.
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