Color image forming method, color image forming apparatus, covering sheet and color image

摘要

In forming a color image, a covering device is placed upon a color area having a plurality of colors regularly arranged. The color area is light reflective and s formed of stripes. The covering device is formed of strips whose phase substantially matches the stripes of the color area and printed on the color area. A color is presented by a color mixture of colors not covered by the covering device in the color area, wherein the color mixture is a subtractive color mixture.