To solve problems in the prior art, where: when using a pen the core of which moves into and out of a through-hole at the tip portion of its shaft as a touch pen, the pen is easy to scratch if the edge of the through-hole touches an LCD screen in particular, and is hard to write if characters, etc. are input by drawing; and there would be no problem with a pen having a similar structure in pressing the keyboard of a calculator, etc., but it is not suitable for the LCD screen.
A knock-system multi-color ballpoint pen is provided with the touch pen having a cylindrical touch tool that is contacted with a touch panel to input and output information at the tip portion of a ballpoint pen shaft disposed in a ballpoint pen body. A support tool having a larger diameter than that of the touch tool is attached to the tip portion of the other ballpoint pen shaft.
KOSAKA MAYUMI
KOFUKUGAWA EMI
TATEWAKI KATSUSHI
TOMIMOTO SHOTA
HIGAKI SATOSHI
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