IMAGE FORMING APPARATUS

摘要

The image forming apparatus includes an exposure head. The exposure head includes an organic EL element array and a rod lens array, and forms an image on a photosensitive drum by irradiating light emitted from each organic EL element on the photoreceptor via each rod lens. In the exposure head, light emitting from the organic EL element is controlled by a controller. The controller generates a filter coefficient for correcting a spot shape based on the difference between the spot shape of the light spot on the photosensitive drum and the target spot shape on the photosensitive drum. It is noted that the difference is generated by the deviation between the distance from the organic EL element to the photosensitive drum, and the correct focus position.

主权项

1. An image forming apparatus comprising:
an exposure unit including a light emitting element array and a rod lens array, and configured to form an image on a photoreceptor by irradiating light emitted from the light emitting element array on the photoreceptor via the rod lens array, wherein the light emitting element array includes a plurality of light emitting elements and the rod lens array includes a plurality of rod lens,; a filter coefficient generation unit configured to generate a filter coefficient for correcting the spot shape based on the difference between a spot shape of a light spot on the photoreceptor and a target light spot shape on the photoreceptor, the difference is generated by a deviation between a distance from the light emitting element to the photoreceptor and a focal length of the plurality of rod lens; and a control unit configured to perform filter processing on image data which represents an image using the filter coefficient, and configured to cause the light emitting elements to emit light based on the image data after the filter processing.