| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus that suppresses the influx of the ambient air to cause adherence of foreign substances to a detection sensor when cooling the detection sensor with an air flow.SOLUTION: A transfer unit 180M supports a conveyance belt 180 and is arranged opposite to a photoreceptor drum 121. A conveyance unit 1M and the transfer unit 180M are arranged with a predetermined gap therebetween. A density detection sensor 52 is arranged in the conveyance unit 1M opposite to the conveyance belt 180. An air flow for cooling generated by a Sirocco fan not illustrated flows into a cooling air path AP along a sheet width direction to cool the density detection sensor 52. A shielding sponge 60 is interposed in the gap between the transfer unit 180M and conveyance unit 1M, and shields the influx of the air flow to the cooling air path AP from the periphery of the transfer unit 180M. |
