BALL FOR BALL-POINT PEN, BALL-POINT PEN TIP, AND BALL-POINT PEN EQUIPPED WITH THE SAME,申请号JP20100243362-传众专利搜索

BALL FOR BALL-POINT PEN, BALL-POINT PEN TIP, AND BALL-POINT PEN EQUIPPED WITH THE SAME

申请公布号：JP2012096376(A)

申请号：JP20100243362

申请日期：2010.10.29

申请公布日期：2012.05.24

申请人：

PILOT INK CO LTD

发明人：ASADA KATSUHISA

分类号：B43K1/08;B43K7/00

主分类号：B43K1/08

摘要：<P>PROBLEM TO BE SOLVED: To provide a ball for ball-point pens which is a ball equipped in a ball-point pen tip, is excellent in corrosion resistance and gives a smooth sense of writing, and to provide a ball-point pen tip equipped with the same, and a ball-point pen equipped with the ball-point pen tip. <P>SOLUTION: The ball for ball-point pens uses a cemented carbide as a material and is treated by sulfonitriding on a surface. The ball-point pen tip includes the ball, having an external form, an inside ball receiving seat and an ink passage formed by cutting of a rod-shaped metal material. Alteratively a pipe tip is equipped with the ball, having a plurality of inward protrusions formed on an inner surface near a front end of a metal pipe by pressing deformation from an outer surface, and ink outflow gaps formed to extend radially outward in a diametrical direction from a center part between the inward protrusions. The ball-point pen is equipped with the ball-point pen tip. <P>COPYRIGHT: (C)2012,JPO&INPIT