Drive source support configuration for an image forming apparatus

An image forming apparatus comprising:

• a casing having a first end portion and a second end portion which are opposite to each other in a first direction, the casing including a frame disposed at the first end portion;
• a drive source comprising a motor, the motor including a motor body configured to generate a driving force and a motor shaft configured to be rotated by the driving force;
• a gear mechanism configured to receive the driving force of the drive source, the gear mechanism comprising at least one gear having a rotational axis extending in a first direction;
• a drive source support which is formed in the frame and includes a first wall overlapping the motor body when viewed in the first direction and a second wall overlapping the motor body when viewed in a second direction perpendicular to the first direction, the first wall and the second wall defining a compartment that encloses and supports the drive source;
• and
• a drive board to which the drive source is attached such that the motor shaft extends from the motor body in the first direction toward the gear mechanism,
• wherein the gear mechanism is disposed closer to the first end portion of the casing than the drive board is to the first end portion of the casing, while the first wall and the second wall of the drive source support are disposed closer to the second end portion of the casing than the drive board is to the second end portion of the casing, and
• wherein at least one of the first wall and the second wall of the drive source support has a plurality of first openings, each of the first openings being spaced apart from each other and from the motor shaft, and being configured to provide air flow between an interior of the compartment and a space exterior of the compartment but within the casing of the image forming apparatus.