| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus suppressing an image density change caused by a change in the proportion of the area of an image, without decreasing productivity. <P>SOLUTION: The toner supply device 61 which a copying machine being an image forming apparatus is provided with, comprises: a first toner bottle 200a storing toner A having high developing capability; and a second toner bottle 200b storing toner B having developing capability lower than the toner A so that two types of toner having different developing capabilities can be supplied. Conveying tubes 301 are connected to these two toner bottles 200, respectively. Thus, the device is provided with two separate toner supply paths. On the basis of the proportion of the area of an image to be outputted, the supply ratio of the two types of toner having different developing capabilities to a developing device 6 is changed. <P>COPYRIGHT: (C)2010,JPO&INPIT |
