Image forming apparatus with first and second power supply

摘要

An image forming apparatus includes a first power supply unit configured to generate first output power, a second power supply unit configured to generate second output power, a switching unit disposed on the primary side of the second power supply unit, a monitoring unit configured to monitor the second output power generated by the second power supply unit, a power source control unit supplied with the first output power, and configured to turn the switching unit ON or OFF, and a control unit supplied with the first output power, and configured to control operations of the power source control unit. When the second output power is lower than a threshold value, the power source control unit turns the switching unit OFF and then back to ON in a state where the first output power generated by the first power supply unit is supplied to the control unit.

主权项

1. An image forming apparatus comprising:
a first power supply unit configured to generate first output power; a second power supply unit configured to generate second output power; a switching unit disposed on the primary side of the second power supply unit; a monitoring unit configured to monitor the second output power generated by the second power supply unit; a power source control unit supplied with the first output power generated by the first power supply unit, and configured to turn the switching unit ON or OFF; and a control unit supplied with the first output power generated by the first power supply unit, and configured to control operations of the power source control unit, wherein, when the power source control unit determines that the second output power generated by the second power supply unit is lower than a threshold value based on the result of the monitoring by the monitoring unit, the power source control unit turns the switching unit OFF and then back to ON in a state where the first output power generated by the first power supply unit is supplied to the control unit.