An image forming apparatus comprising: a body casing; a toner image forming section configured to form a toner image onto a print medium, the toner image forming section including: an image carrier; and a transferring section configured to transfer the toner image formed on a surface of the image carrier to the print medium, and convey the print medium together with the image carrier; a fixing section configured to apply a fixing solution to the print medium conveyed by the image carrier and the transferring section such that the toner image is fixed onto the print medium; a heater configured to heat the print medium having passed the fixing section; a temperature sensor configured to measure a temperature in the body casing; and a controller configured to control the image carrier and the transferring section, wherein in a case that the temperature measured by the temperature sensor is higher than a predetermined threshold value, the controller is configured to control the image carrier and the transferring section such that a conveying velocity of the print medium by the image carrier and the transferring section becomes a first conveying velocity, and in a case that the temperature measured by the temperature sensor is lower than the predetermined threshold value, the controller is configured to control the image carrier and the transferring section such that the conveying velocity of the print medium by the image carrier and the transferring section becomes a second conveying velocity slower than the first conveying velocity, characterized in that the controller is configured to control an application amount of the fixing solution to be applied by the fixing section, in accordance with an image quality of the toner image, and the controller is configured to control the heating temperature of the heater in accordance with the application amount of the fixing solution to be applied by the fixing section. a body casing; a toner image forming section configured to form a toner image onto a print medium, the toner image forming section including: an image carrier; and a transferring section configured to transfer the toner image formed on a surface of the image carrier to the print medium, and convey the print medium together with the image carrier; an image carrier; and a transferring section configured to transfer the toner image formed on a surface of the image carrier to the print medium, and convey the print medium together with the image carrier; a fixing section configured to apply a fixing solution to the print medium conveyed by the image carrier and the transferring section such that the toner image is fixed onto the print medium; a heater configured to heat the print medium having passed the fixing section; a temperature sensor configured to measure a temperature in the body casing; and a controller configured to control the image carrier and the transferring section, wherein in a case that the temperature measured by the temperature sensor is higher than a predetermined threshold value, the controller is configured to control the image carrier and the transferring section such that a conveying velocity of the print medium by the image carrier and the transferring section becomes a first conveying velocity, and in a case that the temperature measured by the temperature sensor is lower than the predetermined threshold value, the controller is configured to control the image carrier and the transferring section such that the conveying velocity of the print medium by the image carrier and the transferring section becomes a second conveying velocity slower than the first conveying velocity, characterized in that the controller is configured to control an application amount of the fixing solution to be applied by the fixing section, in accordance with an image quality of the toner image, and the controller is configured to control the heating temperature of the heater in accordance with the application amount of the fixing solution to be applied by the fixing section.