| 摘要 |
PROBLEM TO BE SOLVED: To attain uniform image density, to eliminate irregularities in an image, to stabilize the density and to improve the display definition, even in an image having a high printing ratio by thoroughly stirring two-component developer and thereafter supplying the developer to a developing roller in a circulating state. SOLUTION: The device is provided with a 3rd carrying path 30 for joining the excessive developer from a 1st carrying path 27 and recovered developer from a 2nd carrying path 28 and for stirring/carrying the developer, and thereafter supplying the developer to the 1st carrying path 27 in the circulating state. Thus, the toner concentration in the stirred developer to be supplied to the 1st carrying path 27 is made more uniform, then, the image density is kept constant and the high definition image free from irregularities can be obtained even in the image having the high printing ratio. |
