| 摘要 |
Certain embodiments provide an image forming apparatus including a photoconductor, a latent image forming portion, an image processing portion, a developer, a transferred body, a sensor that detects an image density of a toner image by the amount of toner attached to a surface and has a sensor characteristic in which a sensor output substantially monotonously decreases according to an increase in the amount of toner, a nonlinear amplifier that has a nonlinear amplification characteristic having one or more inflection points, and enlarges and corrects a value read by the sensor in a range where the sensor output monotonously decreases with respect to the amount of toner by amplification, and an image quality control portion that controls a forming condition of an electrostatic latent image using a correction value of a variation amount of the value at a side where the amount of toner is large in the range.
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