| 摘要 |
An image forming apparatus including an image bearing member; a developing device for developing with toner an electrostatic latent image formed on the image bearing member; a humidity sensor for providing information on ambient humidity of said image forming apparatus; and a controller for controlling a parameter on a density of an image to be formed on a recording material on the basis of pieces of the information provided by the humidity sensor at different times. The controller is capable of controlling the parameter so that, when a first image forming job is ended at an ending time and then a second image forming job is executed after a lapse of a predetermined time from the ending time and in a period in which a detection result of the humidity sensor changes and then is constant, a difference between a first set value which is the parameter set during formation of a final image in a first image forming job and a second set value which is the parameter set during image formation on a first sheet in the second image forming job after the lapse of the predetermined time from the ending time, increases with an increase of proportion of a time in which the developing device is driven during the lapse of the predetermined time.
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