Patent ID: 8666269
Filing Date: 2014-03-04
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a photosensitive member; a developing device for developing with toner an electrostatic image formed on said photosensitive member; a temperature/humidity sensor; a storing portion for storing environmental information obtained on the basis of a measurement result of said temperature/humidity sensor measured at different times and for storing time information relating to the environmental information; and a controller for controlling an image forming condition so that when a second temperature/humidity environment, measured by said temperature/humidity sensor, is different from a first temperature/humidity environment and when the image forming condition is changed to a second image forming condition different from a first image forming condition, a change amount of the image forming condition when said developing device is driven before the image forming condition is changed is larger than a change amount of the image forming condition when said developing device is not driven before the image forming condition is changed, wherein said controller controls the image forming condition on the basis of environmental information and time information relating to the environmental information which is previously stored in said storing portion and on the basis of environmental information and time information relating to the environmental information which is obtained after being stored in said storing portion.