Image forming apparatus

An image forming apparatus comprising:

• a photoconductor including a charge generation layer;
• a charging member configured to charge a surface of the photoconductor;
• and
• an exposure unit configured to expose the surface of the photoconductor to form a toner image on the surface of the photoconductor charged by the charging member,
• wherein the exposure unit exposes the surface of the photoconductor by scanning a laser beam in a main scanning direction at a non-constant scan rate, and exposure amount per unit length of the surface of the photoconductor in the main scanning direction is larger in a first region than in a second region, the first region being a region in the surface of the photoconductor exposed at a first scan rate, the second region being a region in the surface of the photoconductor exposed at a second scan rate higher than the first scan rate, and
• wherein a thickness of the charge generation layer is smaller in the first region than in the second region.