申请人:THE PILOT INK CO., LTD.
公开号:EP2072277A1
公开(公告)日:2009-06-24
Provided are a writing instrument produced at a lower cost than conventional thermochromic writing instruments utilizing frictional heat, slim like a pencil and not bulky because it contains an ink directly in a barrel thereof, and excellent in portability; and a set of the writing instruments.
The writing instrument 1 is obtained by directly filling a barrel thereof with an ink 2 which becomes colorless or colored, or undergoes a color change by heating and an ink follower 5 following the ink with its consumption; firmly fixing a writing tip portion 3 to the end of the barrel directly or via a relay member; and disposing a friction body 6 having an elasticity at the rear end portion of the barrel. The writing instrument set has a plurality of the writing instruments respectively different from each other in color tone.
本发明提供了一种书写工具,与传统的利用摩擦热的热致变色书写工具相比,其生产成本更低;该书写工具像铅笔一样纤细,由于直接在其笔管中装有墨水而不笨重,并且便携性极佳;还提供了一套该书写工具。
书写工具 1 是通过以下方式获得的:在其笔管中直接注入墨水 2,墨水 2 通过加热变为无色或有色,或发生颜色变化,墨水跟随器 5 随着墨水的消耗而变化;将书写尖端部分 3 直接或通过中继部件牢固地固定在笔管的末端;以及在笔管的后端部分配置具有弹性的摩擦体 6。这套书写工具具有多个色调各不相同的书写工具。