| 摘要 |
PURPOSE:To obtain a tip of a ball-point pen wherein occurrence of a condition that an angle section thereof is caught by an object to be written such as a paper during the writing is prevented to the utmost, ink discharge is constant to the utmost and occurrence of so-called hollow line or blur that ink is not properly transferred on the paper is prevented to the utmost. CONSTITUTION:A tip section of a reduced diameter section 2 is applied with abrasion and deformation by collision of fine particles to form in curved surface. |
