Power supply device provided in image formation device

Abstract

The present invention provides a power supply device 10A capable of achieving power savings in an image formation device without sacrificing necessary noise removal. The power supply device 10A includes a filter portion 20, a main power supply portion 30 configured to supply power to an image formation portion 50 using alternating current power supplied via the filter portion 20, and a heater power supply portion 40 configured to supply power to a fixing heater portion 51 using the alternating current power supplied via the filter portion 20. The filter portion 20 includes common lines 21a and 21b, first branch lines 22a and 22b connecting the common lines and the main power supply portion 30, second branch lines 23a and 23b connecting the common lines and the heater power supply portion 40 in a disconnectable manner, a first X capacitor C1 provided between the common lines, a second X capacitor C2 provided between the first branch lines in a disconnectable manner, and a third X capacitor C3 provided between the second branch lines and configured to be disconnected from the common lines along with the heater power supply portion 40.

Dependencies are inferred from the claim text.