Mitsubishi Pencil Company, Limited

Kouichi Hirano

Masahiro Suzuki

Toshimi Kamitani

Yukinori Sawa

To provide a writing instrument capable of further improving durability of a writing nib without impairing writing performance even when writing is performed with a heavy writing load. A writing instrument A having a writing part formed of at least a writing nibmade of a porous body and a retainermade of a hard material, in which the protrusion amount of the distal end of the writing nibfrom the retaineris 0.65 mm or more and 1.05 mm or less and/or 40% or more and 65% or less of the thickness of the writing nib

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Gunma, Japan

Kouichi Hirano