Knock type Thermal discoloration ink writing instruments

摘要

The present invention relates to a thermochromic ink writing implement having a thermal storage type friction agent, wherein the thermochromic ink writing on the writing surface written through the pen tip of the writing unit is thermally discolored by a friction agent, and the friction heat is stored by the friction heat of the friction agent. The purpose is to sustain time and allow frictional heat to be concentrated on the writing object on the writing surface through the friction agent. That is, in the thermochromic ink writing implement, the friction agent receiving tool provided in the knocking means and the thermochromic ink written by the writing unit by friction contact with the writing surface are bound by a friction agent binding means to the friction agent receiving tool. A friction agent that allows frictional heat to be applied to the writing material to make the writing material thermochromic and transparent, and heats up the heat generated during friction with the writing surface on the lower side of the friction agent to release heat from the friction agent to the writing surface. It is characterized in that it is configured of a heat storage unit provided to insulate heat dissipation to the lower portion by the heat storage heat insulation means to continue after the friction. Accordingly, the present invention maximizes the frictional heat action time due to the frictional heat storage in the friction process of the writing surface by the friction agent, so that the writing material is easily thermochromic and transparent, and the frictional heat is concentrated on the writing material on the writing surface to prevent heat discoloration. It has the effect of easily erasing writings through transparency.