| 摘要 |
The present invention provides a toner concentration adjusting system and an image forming apparatus which can accurately adjust toner concentration by controlling the supply of a concentrated developer even if a production lot of the concentrated developer is different. In the method, for controlling the toner concentration, in which the supply of the concentrated developer and the like to a wet type developer for which a first control target value is set is controlled while detecting a substitute characteristic of toner concentration, the first control target value is corrected depending on a second control target value based on a substitute characteristic of the toner concentration of the lot of the concentrated developer to be supplied, and depending on a cumulative supply amount of the lot of the concentrated developer. |
