Patent ID: 7864207

Claim:
An optical disk drawing apparatus for drawing an image on a drawing layer of an optical disk, the drawing layer being discolored by receiving any one of heat and light, the apparatus comprising: a rotating unit that rotates the optical disk; an irradiating unit that is movable in a radial direction of the optical disk, and irradiates laser light to be focused on the drawing layer of the optical disk rotated by the rotating unit; a receiver that receives image data indicative of an image drawn on the drawing layer over a time period during which the optical disk is rotated by 1 turn; a storage having a first storage region and a second storage region; a writing unit that writes the image data received by the receiver into the first storage region; a duplication data producer that produces one piece, or plural pieces, of duplication data as to the image data written in the first storage region, in such a manner that a number of pieces of the duplication data corresponds to nâˆ’1, where n is a number of overwriting operations to be performed on the optical disk, and writes the produced duplication data in the second storage region; and a drawing unit that causes the irradiating unit to irradiate the laser light onto the drawing layer according to the image data and the duplication data read from the storage while a position of the irradiating unit in the radial direction is maintained within a certain range and the optical disk is rotated by the rotating unit by plural turns.