| 摘要 |
PROBLEM TO BE SOLVED: To steplessly write intermediately mixed color by dividing an ink supply unit extended to a tip, and inserting the unit to an ink tank impregnated with different color. SOLUTION: When a first color is red R and a second color is blue B, red R oozes out at a tip 4 of the side near a first ink tank 2, it can be written with the red R, and blue B oozes out at a tip 4 of the side near a second ink tank 2, and it can be written with the blue B. An intermediate mixed color mixed with the red R and the blue B, that is, a purple P partly oozes out near a centerline of a longitudinal direction of the tip 4. In this case, the purple P is written near the centerline, but a complete purple P is on a centerline of the tip 4 in a longitudinal direction, a part near the red R from the centerline is steplessly near the red R, and a part near the blue B is steplessly near the blue B, and hence so-called gradation effect is provided. |
