| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image forming apparatus which is capable of suppressing detection errors of a toner concentration detection means, which are caused by variations of toner characteristics accompanying the lot change of supply toner. <P>SOLUTION: An image forming apparatus CM includes a developing device 4 for development with a two-component developer, which includes a toner concentration detection sensor 140, and a toner supply mechanism 150 for supplying toner to the developing device 4, which includes a storage means 145 allowing toner characteristic information inputted thereto and outputted therefrom, The image forming apparatus includes a sensor control means 151 capable of changing an input control voltage to be given to the toner concentration detection sensor 140, an image area ratio acquisition means 153 for acquiring input image area ratio data in response to acquisition of the number of papers supplied to the developing device 4, and a data processor (main body control device) 154 for reading in data and is configured such that the input control voltage of the toner concentration detection sensor 140 is changed on the basis of information of respective means. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
