| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus enabling a user to easily confirm the usage situation. <P>SOLUTION: A reference power rate is registered in a database; and when it is decided that the reference power rate has already been inputted (S101), the total power rate is calculated from "electrical energy consumed" and "the reference electric power rate" stored in the data base (S102). In addition to "the electrical energy consumed" stored in the database 12a, "the total electric power rate" arithmetically calculated in the step S102 is displayed on a display part (S103). Meanwhile, when "the reference electric power rate" is not stored in the database (S101), the value of "the electrical energy consumed" in the database is displayed on the display part. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
