Patent ID: 7037019

Claim:
An ink-storing member for a writing instrument, the ink-storing member stores an ink for the writing instrument, wherein the ink-storing member comprises a multilayer structure comprising an organic high molecular compound layer constituted of an organic high molecular compound and an inorganic compound layer constituted of an inorganic compound layer, the ink-storing member having a parallel light transmittance of 50% or more, wherein the inorganic compound layer is comprised of inorganic compounds selected from the group consisting of SiO, SiO 2 , Al 2 O 3 , CaF 2 , SnO 2 , CeF 3 , MgO, ZnO, TiO 2 , MgAlO 4 , In 2 O 3 , SrCu 2 O 2 , CuInSe 2 , CuInSe 2 and ITO.