| 摘要 |
<p>To prevent ink collecting in a space between a nib and an ink relay core and to increase shape forming precision of the nib. A nib piece with high roundness is obtained in the following manner: in the forming of the nib piece, a punched hole is formed in a base portion of a punched plate which is to be bent; the base portion of the punched plate is bent and shaped into a tubular structure; a pipe member which is aligned with and accommodated in the tubular body, is disposed in an inner portion of the base portion of the punched plate which has been bent into the tubular structure; and the punched plate is shaped to obtain a structure to wrap an outer periphery of the pipe member. The punched plate includes an engageable joint portion, such as a protrusion and a recess, which engage each other and form a hooked edge when the punched plate is bent into a cylindrical form. Therefore, no misalignment in the lengthwise direction occurs in both sides of the joint portions bordering on the hooked edge, whereby manufacturing precision of the writing tip is increased.</p> |
