| 摘要 |
PURPOSE:To obtain a film which is less hard to recognize recording information when adhered to a document surface where information is recorded, but has large copy prevention effect by using a transparent film colored in red, yellow, and blue. CONSTITUTION:This copy preventive film is formed of the transparent film colored in red by 89-39wt%, yellow by 10-60%, and blue by 20-1%. A coloring range is within the area (hatched) determined by points A-D. Namely, the point A is colored in 70% red, 10% yellow, and 20% blue and the point B is colored in 89% red, 10% yellow, and 1% blue; and the point C is colored in 40% red, 40% yellow, and 20% blue and the point D is colored in 39% red, 60% yellow, and 1% blue. |
