| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink holding tube by which, even if the appearance color of ink is a dark color near black, the appearance color observed through the ink holding tube is different from the appearance color of ink contained while the same drawn line of the ink contained or different color base is developed, enabling easy recognition of the appearance color of ink, and a writing instrument using the same. <P>SOLUTION: When an ink, which is contained in the tube constituting resin of the ink holding tube for a writing instrument having its specific wavelength appearance color being absorbed, is observed through the ink holding tube, the ink holding tube, which contains a pearl pigment to develop a specified appearance color of ink, develops colors to allow the appearance color of ink to be determined. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
