Patent ID: 7016624
Filing Date: 2006-03-21
Classification: G03G

Abstract:
1. A method for controlling an image forming device having a plurality of functional units, a controlling unit, and a power supply, said method comprising: producing power-on and power-off signals by said controlling unit to control individual power supply to said functional units activated by supplied power, the power-on signal being an instruction to apply electric power to the functional units while the power-off signal being an instruction to interrupt power supply to the functional units; supplying each of said functional units with electric power by said power supply upon receiving the power-on signal and interrupting power supply to each functional unit upon receiving the power-off signal; producing an operation start signal by said control unit to instruct actuation of each of said functional units and sending the operation start signal to said each of said functional units; and producing an operation completion signal by each of said functional units to report completion of task and sending the operation completion signal to the control unit, wherein said control unit produces the power-on signal to the power supply to supply each of said functional units with power before a predetermined time of actuation of the each of said functional units, and upon receipt of the operation completion signal from each of the functional units, the control unit produces the power-off signal to the power supply to terminate power supply to the each of said functional units.