| 摘要 |
An image forming device that forms an image on a print medium includes a power saving mode shifting part that shifts a mode of the image forming device to a power saving mode, in which power consumption is decreased, when a set power saving mode shifting time has elapsed during a standby mode, an idle time watching part that measures an idle time in the standby mode from a time of a completion of a previous printing to a time of starting a subsequent printing, a counting part that counts a number of times that the idle time has been equal to or longer than a preset idle reference time, wherein the number of times is a count value, and a shifting time setting part that sets the power saving mode shifting time in response to the count value. |
