| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an amusing writing utensil capable of forming handwriting with highly visual effect for a long period of time using versatile writing utensil structure. <P>SOLUTION: The writing utensil 1 is constituted by connecting either one of a fibrous tip 3, a felt tip, and a plastic tip to one end or both ends of an ink occluding body 2 housed in a shaft tube 4. It is filled with two kinds or more of inks 21, 22 with different color tones in order from one end to the other end of the ink occluding body 2 in contact condition, and the inks contain pigments with average particle size of 0.5 to 4.0 μm as coloring agents and have viscosity ranging from 7.0 to 30.0 mPa s at 20°C. <P>COPYRIGHT: (C)2011,JPO&INPIT |
