Image forming device including sheet-metal housing

An image forming device, comprising:

• a processing unit which performs an image forming process on a sheet;
• a housing which defines a housing space that houses the processing unit and which includes a pair of a first sheet-metal frame and a second sheet-metal frame that oppose each other and a sheet-metal coupling piece extending between the first sheet-metal frame and the second sheet-metal frame and coupling the first sheet-metal frame and the second sheet-metal frame to each other, with the first sheet-metal frame and the second sheet-metal frame being configured to support the processing unit therebetween;
• a high-voltage board which generates a high voltage to be supplied to the processing unit;
• a wire which electrically connects the high-voltage board and the processing unit with each other and which supplies the high voltage to the processing unit;
• and
• a wire holding plate which holds the wire, and which extends over substantially the entire dimension of the coupling piece in an extending direction thereof and is fixed to the coupling piece.