Image forming apparatus that controls light intensity for exposure

An image forming apparatus comprising:

• an image carrier;
• a light source configured to emit light for exposing the image carrier;
• a scanner configured to scan, in a main-scanning direction, the image carrier with the light emitted by the light source,
• a controller configured to control a light intensity of the light source;
• and
• a driver configured to drive the light source using a drive current that is obtained based on a target light intensity of the light source and a correction amount, the correction amount depending on a scanned section in the main-scanning direction, the drive current decreasing as the correction amount increases,
• wherein, in a case that the target light intensity is a first target light intensity and the correction amount is a first correction amount, the driving current is changed by a first amount, and
• in a case that the target light intensity is a second target light intensity greater than the first target light intensity and the correction amount is the first correction amount, the driving current is changed by a second amount larger than the first amount.

An image forming apparatus comprising:

• an image carrier;
• a light source configured to emit light for exposing the image carrier;
• a scanner configured to scan, in a main-scanning direction, the image carrier with the light emitted by the light source;
• a controller configured to control a light intensity of the light source;
• and
• a driver configured to drive the light source using a drive current that is obtained based on a scanned section in the main-scanning direction,
• wherein, in a case that a target light intensity of the light source is a first target light intensity, a difference between a first drive current used to drive the light source to scan a first section and a second drive current used to drive the light source to scan a second section closer to an end portion of an image area of the image carrier than the first section is a first value,
• wherein, in a case that the target light intensity of the light source is a second target light intensity smaller than the first target intensity, a difference between a third drive current used to drive the light source to scan the first section and a fourth drive current used to drive the light source to scan the second section is a second value, and
• wherein the first value is larger than the second value.