| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image forming device attaining a stable image free from toner-scattering, by replenishing highly precisely a replenishing agent to a developing device, while taking a change of a toner concentration in the replenishing agent into consideration, in the developing device using a developer containing toner and a carrier. <P>SOLUTION: This image forming device includes a replenishing agent replenishing device 4 for replenishing the replenishing agent containing the toner and the carrier, to the developing device 3, the developing device 3 is gradually replenished with the replenishing agent from the replenishing agent replenishing device 4, the developer is gradually discharged from a developer discharge port 24b in response thereto, and the replenishing agent replenishing device 4 includes the first toner concentration detecting means 52 for detecting the toner concentration in the replenishing agent. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
