Patent ID: 8798493

Claim:
An image forming apparatus comprising: a main body; a plurality of exposing portions each including a polygon motor, each exposing portion forming a latent image on an image-supporting member based on image data by driving of the polygon motor; a plurality of cases each housing one of the plurality of exposing portions; a plurality of developing portions that develops the latent images formed by the plurality of exposing portions using toner; and a partition member that divides a space in which the plurality of cases is provided from a space in which the plurality of developing portions is provided, the partition member being provided between the space in which the plurality of cases is provided and the space in which the plurality of developing portions is provided, wherein the plurality of cases provide polygon motors at projecting portions projecting from the partition member into the space in which the plurality of developing portions are provided, the projecting portions being overlapped with at least a part of the plurality of developing portions in a vertical direction; an intake port provided on the main body; an intake fan attached to the intake port, which takes air into the image forming apparatus; an intake duct which guides the air taken into the image forming apparatus by the intake fan to an overlap portion in which the projecting portions and the exposing portions are overlapped, the intake duct being communicated with the intake port; an exhaust port provided on the main body; an exhaust duct which guides air around the projecting portions and the developing portions to the exhaust port, the exhaust duct being communicated with the exhaust port; and an exhaust fan which exhausts the air guided by the exhaust duct outside of the image forming apparatus, the exhaust fan being attached to the exhaust port.