Drum cartridge and image forming apparatus

A drum cartridge comprising:

• a first photosensitive drum rotatable about a drum axis extending in a first direction;
• a frame holding the photosensitive drum and including:
• a first side plate positioned at one side of the first photosensitive drum in the first direction;
• a second side plate positioned at the other side of the first photosensitive drum in the first direction;
• and
• a first connecting plate connecting between the first side plate and the second side plate, the first connecting plate including one end and other end in the first direction, the one end of the first connecting plate connecting to one end of the first side plate in a second direction intersecting the first direction, the other end of the first connecting plate connecting to one end of the second side plate in the second direction;
• a main body connector positioned at the other end of the first connecting plate;
• a first toner cartridge connector positioned at an inner surface of the first side plate, the first toner cartridge connector spaced apart from the main body connector in the second direction;
• a drum-cartridge circuit board being electrically connected between the main body connector and the first toner cartridge connector, the drum-cartridge circuit board positioned at the first connecting plate;
• a harness electrically connecting the main body connector and the drum-cartridge circuit board, the harness extending in the first direction;
• and
• a first harness electrically connecting the first connector and the drum-cartridge circuit board, the first harness extending in the second direction.