| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite writing utensil that is rich in such practicality that it is possible to discriminate a state that heat-discoloring handwriting can be formed from a state that non-discoloring handwriting can be formed upon writing, and it is possible to efficiently form the heat-discoloring handwriting and the non-discoloring handwriting.SOLUTION: A composite writing utensil 1 stores a refill 2 in which a reversible heat discoloring ink composition changing its color from chromatic color to achromatic color is stored, and a refill 2 in which a non-discoloring ink composition is stored in a shaft cylinder 9, and is configured so as to make the writing tip of each refill selectively retractable from the shaft cylinder. A discrimination display part for showing a color of the stored ink composition is provided in the writing tip of the refill in which the non-discoloring ink composition is stored or in the neighborhood thereof. A white, gray or transparent discrimination display part 8, which discriminates from the refill in which the non-discoloring ink composition is stored, is provided in the writing tip 3 of the refill in which the reversible heat discoloring ink composition is stored or in the neighborhood thereof. |
