| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing apparatus wherein a stirring performance and an electrifying performance are improved by preventing the aggregation of replenished toner with a simple constitution, then, the defect of a developed image is prevented. <P>SOLUTION: The developing apparatus 20 includes a developing tank 24 wherein a developing roller 21 and a stirring roller 22 are freely rotatably arranged, and a toner hopper 25 arranged connecting with the developing tank 24 so as to supply the toner 30 into the developing tank 24, and air supplied from an air pump 29 is made to flow into the toner hopper 25 through a hopper filter 28 arranged in the toner hopper 25 so that the toner 30 may lie between the toner replenishing port 27 and the hopper filter 28, and the toner 30 in the toner hopper 25 is stirred by using the air, and also, the toner is replenished into the developing tank 24 through the toner replenishing port 27 formed in the connection part 26 of the toner hopper 25 and the developing tank 24. <P>COPYRIGHT: (C)2007,JPO&INPIT |
