| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately find the amount of toner in a prescribed unit consumed by toner image formation, even when changes in the data related to toner consumption calculation in an image forming apparatus detachably constituting a toner storing part become necessary. <P>SOLUTION: Memories 43K, 43C, 43M and 43Y are provided in development devices 4K, 4C, 4M and 4Y respectively, and an off-set value Tod as related information related to the toner consumption calculation are stored in the memories 43K, 43C, 43M and 43Y. When the development devices 4K, 4C, 4M and 4Y are mounted, the off-set values Tod stored in the memories 43K, 43C, 43M and 43Y are read out and are stored once in a memory 127, and then toner consumption is calculated by using this. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
