Patent ID: 7710447

Claim:
An optical disk image forming apparatus that forms an image constituted by a plurality of pixels on an optical disk by irradiating laser light onto the optical disk including a color changing layer, the color changing layer being capable of changing a characteristic of a color by the laser light, the optical disk image forming apparatus comprising: an optical disk drive that includes a rotating unit for rotating the optical disk and a laser light irradiating unit being movable in a radial direction of the optical disk; and a control unit that virtually sets a plurality of pixel areas on the optical disk, allocates predetermined writing densities to the plurality of pixel areas based on image data representing the image to be formed, respectively, and controls the optical disk drive to irradiate the laser light onto each pixel area according to the allocated writing densities, wherein, when the allocated writing density is a halftone writing density, the control unit corrects the halftone writing density so as to be darker than the allocated writing density, based on a relation between the writing density before correction by the control unit and the writing density after correction by the control unit which is changed according to a number of times or an amount of time the laser light passes each pixel area.