Image forming apparatus

An image forming apparatus comprising:

• a rotatable photosensitive member;
• an exposure head including a plurality of light emitting elements, wherein the exposure head is configured to form an image at a first resolution corresponding to an arrangement interval of the plurality of light emitting elements in an intersecting direction which intersects a rotation direction of the photosensitive member, the light emitting elements arranged at different positions from each other in the intersecting direction to expose the photosensitive member;
• a data generating unit configured to generate pixel data, based on input image data, which associates pixel data of a second resolution with respective positions of pixels of the first resolution in the intersecting direction, the second resolution being higher than the first resolution;
• a correction unit configured to correct associations between respective pieces of the pixel data generated by the data generating unit and the respective positions of the pixels in the intersecting direction in order to adjust a forming position of an image in the intersecting direction;
• a conversion unit configured to convert the plurality of pieces of pixel data that correspond to the second resolution, of which the associations are corrected by the correction unit, to a plurality of pieces of pixel data that correspond to the first resolution, corresponding to the positions of the pixels in the intersecting direction;
• and
• a drive unit configured to drive each of the plurality of light emitting elements corresponding to a position of each piece of the pixel data that corresponds to the first resolution, based on the pixel data of each pixel that corresponds to the first resolution, converted by the conversion unit.