Patent ID: 7781907

Claim:
An image forming apparatus, comprising: a first rectifying circuit that is connected with an external commercial power supply and rectifies an alternating-current input; a first low-voltage power supply circuit that generates low voltages from a rectified power for power supply to respective parts of the image forming apparatus; a first connector that is connected with the first rectifying circuit and is for outputting a power rectified by the first rectifying circuit; and a second connector that is connected with the first low-voltage power supply circuit and is for taking in a rectified power, wherein the image forming apparatus is singly usable and optionally usable by being connected with an image reading apparatus, the image forming apparatus forms an electrostatic latent image, forms a toner image by developing the electrostatic latent image with toner, and fixes the toner image onto a transfer sheet, the first connector and the second connector are connected by wiring, in a case where the image forming apparatus is singly used, and the first connector and the image reading apparatus are connected by wiring, and the second connector and the image reading apparatus are connected by wiring, in a case where the image forming apparatus is used by being connected with the image reading apparatus.