Patent ID: 7083349
Filing Date: 2006-08-01
Classification: B43K

Abstract:
1. A writing implement in which liquid for ink and colorant are separately stored, comprising: a cylindrical shaft member; a pen tip member which is fixed to one end of the shaft member and from which colored ink seeps out; the liquid for ink which is stored in a storing part in the shaft member and which comprises a major component of the colored ink seeping out from an end of the pen tip member; and the colorant to be added to the liquid for ink to be the colored ink and provided in a colorant-storing part; wherein at least a part of a cylindrical side surface of the shaft member corresponding to a part where the liquid for ink is stored is formed to be transparent; and wherein, between the storing part of the liquid for ink and colorant-storing part storing the colorant, a colorant-adsorbing core made of a porous body mainly composed of activated carbon is provided which introduces the liquid for ink into the colorant-storing part while capturing the colorant diffusing toward the storing part of the liquid for ink.