FILTER, FLAVOR INHALATION ARTICLE, FLAVOR INHALATION ARTICLE ASSEMBLY, METHOD FOR PRODUCING FILTER, METHOD FOR PRODUCING FLAVOR INHALATION ARTICLE, AND METHOD FOR PRODUCING FLAVOR INHALATION ARTICLE ASSEMBLY

摘要

This filter has: a first filter body which has a first end surface and a second end surface and a longitudinal axis which intersects the first end surface and the second end surface; and an impregnated section positioned between the first end surface and the second end surface of the first filter body on the first end surface side including the first end surface and impregnated with a color development substance and/or a coloring substance.