| 摘要 |
<p>A thermally changeable color writing tool used for writing letters whose color can be thermally changed by friction, quickly brought into a writing-capable state (pen-point projecting state) or a stored state (pen-point retracted state) even if the user can use only one hand, and containing a thermally changeable color ink. The thermally changeable color wiring tool contains a thermally changeable color ink, comprises a barrel (2) accommodating a writing body (8) movably axially and having an operating portion (5) at the outer surface of the barrel (2). The pen point (81) of the writing body (8) can be projected/retracted from/into the front end hole (31) of the barrel (2) by operating the operating portion (5). The thermally changeable color ink (83) is contained inside the writing body (8). The pen point (81) capable of ejecting the thermally changeable color ink (83) is provided to the front end of the writing tool (8), and a friction portion (4) capable of changing the color of the writing done in the thermally changeable color ink (83) by the frictional heat generated when the writing is rubbed with the friction portion (4) is provided on the outer surface of the barrel (2).</p> |
