GRIP FOR TEMPERATURE-SENSITIVE COLOR CHANGEABLE WRITING IMPLEMENT, WRITING IMPLEMENT EQUIPPED WITH IT AND WRITING IMPLEMENT SET

摘要

PROBLEM TO BE SOLVED: To provide a grip for temperature-sensitive color changeable writing implement in which a phase is changed by sensing the temperature of the fingertips or the frictional heat by the fingertips during gripping, and a change in the phase including a transitional discoloration process from starting discoloration to a complete discoloration is gradually visualized, a writing implement equipped with it and a writing implement set.;SOLUTION: The grip is constituted by coloring a grip part with a coloring material comprising, as essential components, one or two or more pigments selected from reversible thermal color changeable pigments with a high temperature side color change starting temperature in a range of 25-45°C, and with the width of temperature (ΔT) in the temperature range in a range of 3-12°C when the temperature range between the high temperature side color change starting temperature and the high temperature side complete color changing temperature is made to be a transitional color change temperature range. The writing implement equipped with the grip and the writing implement which is convenient for a user to form an arbitrary writing image on the grip part are made into a set.;COPYRIGHT: (C)2005,JPO&NCIPI