To provide an image forming apparatus which can avoid the gap of the position of liquid droplet impacting to a recording medium and form an image of high quality with the ink characteristics based on the environment and number of times of discharge.

The image forming apparatus controls the liquid discharge speed of a nozzle by changing the initial value of a driving signal corresponding to the environment information at the time of power supply ON, referring to a storage means for storing the driving signal corresponding to information and the driving signal corresponding to a counted value, a count means for counting the number of times of discharge after the power supply ON as the counted value, and the driving signal corresponding to the counted value which has been stored in the storage means based on the counted value.