Image forming apparatus and control method thereof

An image forming apparatus comprising:

• a photosensitive member;
• a charger unit configured to charge the photosensitive member;
• an exposing unit configured to form a latent image by scanning the photosensitive member by laser light which has a different spot diameter in accordance with a scanning position of the photosensitive member in a main scanning direction;
• a developing unit configured to develop an image by adhering a toner to the photosensitive member on which the latent image is formed;
• and
• a control unit configured to control a luminance of the laser light and an emission time of the laser light for each pixel position of the photosensitive member in the main scanning direction.

A control method of an image forming apparatus that includes

• a photosensitive member,
• a charger unit configured to charge the photosensitive member,
• an exposing unit configured to form a latent image by scanning the photosensitive member by laser light which has a different spot diameter in accordance with a scanning position of the photosensitive member in a main scanning direction, and
• a developing unit configured to develop an image by adhering a toner to the photosensitive member on which the latent image is formed, the method comprising:
• controlling a luminance of the laser light and a resolution of the photosensitive member in a sub-scanning direction in accordance with the scanning position of the photosensitive member in the main scanning direction.

A control method of an image forming apparatus that includes

• a photosensitive member,
• a charger unit configured to charge the photosensitive member,
• an exposing unit configured to form a latent image by scanning the photosensitive member by laser light which has a different spot diameter in accordance with a scanning position of the photosensitive member in a main scanning direction, and
• a developing unit configured to develop an image by adhering a toner to the photosensitive member on which the latent image is formed, the method comprising:
• controlling a luminance of the laser light and an emission time of the laser light for each pixel position of the photosensitive member in the main scanning direction.