Patent ID: 7436421
Filing Date: 2008-10-14
Classification: B41J,G11B

Abstract:
1. A method of producing a label on a rotating medium, comprising: disposing optically visible marks on the rotating medium to form a plurality of tracks of the optically visible marks, wherein the plurality of tracks include a plurality of seams, wherein each seam separates an end of a track from the beginning of another track; locating the seams at different angular locations on the rotating medium so that the tracks begin at different angular locations on the rotating medium; accumulating an error caused by rounding fractions of the marks up or down so that whole marks are disposed on the rotating medium, wherein the accumulated error includes an error for a track that is being written to and any errors for different tracks that were previously written to; disposing one extra whole mark on the rotating medium when the accumulated error corresponds to rounding down by more than one whole mark; and disposing one less whole mark on the rotating medium when the accumulated error corresponds to rounding up by more than one whole mark.