| 摘要 |
PROBLEM TO BE SOLVED: To reduce consumption power in a power peak shift time zone.SOLUTION: In an image formation device 1, a switching/charging part 33 selects either an external driving power source power, which is generated from an external power source power SP by an external power source 31 or a power storage driving power source power which is generated by a power storage power source 32 as a driving power source power and supplies the same to each part of the image formation device 1. When a current time, which is timed by a time management control part 23 is in a time zone of power peak shift in which use of the external power source power SP is suppressed, a driving power source control part 22 so controls the switching/charging part 33 as to select said power storage driving power source power as said driving power source power. Further, when the operation state is terminated in the afore-said power peak shift time zone, the driving power source control part 22 so controls as to change the power state from a normal power mode into a power-saving mode in which power consumption is less than that in the normal power mode. |
