Image forming apparatus

An image forming apparatus, comprising:

• a plurality of photosensitive drums which are configured to bear toner images;
• an intermediate transfer belt to which the toner images are transferred from the photosensitive drums;
• a determination unit configured to determine whether or not a dew condensation occurrence condition is met;
• and
• a dew condensation elimination unit configured to perform a dew condensation elimination operation by applying toner to the photosensitive drum and collecting the applied toner in a case where the determination unit determines that the dew condensation occurrence condition is met and when an instruction for image formation is received,
• wherein, in a case in which the dew condensation elimination operation is to be performed, when the image formation is started in a color image formation mode, the dew condensation elimination unit executes a first dew condensation elimination mode of applying toner to photosensitive drums corresponding to all of colors,
• wherein, in the case in which the dew condensation elimination operation is to be performed, when the image formation is started in a monochromatic image formation mode, the dew condensation elimination unit executes a second dew condensation elimination mode of applying toner to only a photosensitive drum corresponding to black, and
• wherein, when an image formation mode is changed from the monochromatic image formation mode to the color image formation mode after the image formation is started, the dew condensation elimination unit executes a third dew condensation elimination mode of applying toner to only photosensitive drums for colors.