Patent ID: 8531718
Filing Date: 2013-09-10
Classification: G03G,G06K

Abstract:
1. An image forming device, comprising: at least one motor; a non-volatile memory into which information can be written; a writing unit to write into said non-volatile memory operating information within the image forming device at a predetermined time; an electric source power supplying unit to supply electric power to said writing unit, the electric power being supplied from an electric power source; a regenerative unit to take regenerative electric power out of said motor, the regenerative electric power being generated until said motor stops; a regenerative electric power supplying unit, when electric power supply from said electric source power supplying unit is stopped, to supply the regenerative electric power taken out of said motor by said regenerative unit to said writing unit, so as to cause said writing unit to perform writing into said non-volatile memory using the regenerative electric power; a first calculating unit to calculate a backup process time required for said writing unit to write all necessary information into said non-volatile memory; and a second calculating unit to calculate, on the basis of a driving status of said motor, an electric power supplying time during which said regenerative electric power supplying unit is capable of supplying electric power to said writing unit, wherein in the case where the backup process time calculated by said first calculating unit exceeds the electric power supplying time calculated by said second calculating unit, said writing unit performs writing into said non-volatile memory at least until said backup process time becomes not greater than said electric power supplying time.