Patent ID: 8990603
Filing Date: 2015-03-24
Classification: B41J,G03G,G06F,H02J,H04N,Y02B,Y04S

Abstract:
1. An image forming apparatus comprising: a power supply unit configured to supply power; a secondary battery configured to be charged with the power from the power supply unit and to supply the charged power; a receiving unit configured to receive an input regarding a print process from a user; a mode setting unit configured to set the image forming apparatus to be in a normal mode or an energy saving mode based on the input from the user, the normal mode causing the image forming apparatus to be operated by the power supplied from the power supply unit, the energy saving mode causing the image forming apparatus to be operated by the power supplied from the power supply unit or the secondary battery so that power consumption of the image forming apparatus is less than that in the normal mode; a charging amount calculation unit configured to calculate a charging amount of the secondary battery based on an energy saving time that is a time for which the image forming apparatus has been in the energy saving mode; a charging unit configured to charge the secondary battery by the charging amount calculated by the charging amount calculation unit; and a transition time storage unit configured to store therein a transition time at which the mode setting unit shifts the image forming apparatus from the normal mode to the energy saving mode, or vice versa, the transition time being stored in a deletable manner, wherein the charging amount calculation unit determines the energy saving time based on the transition time stored in the transition time storage unit and calculates the charging amount based on the energy saving time, the receiving unit further receives an instruction to delete the transition time stored in the transition time storage unit from the user, and the image forming apparatus further comprises a deletion unit configured to delete at least one transition time stored in the transition time storage unit when the receiving unit receives the instruction.