WRITING IMPLEMENT

WIPO Patent Application WO/2003/018328

A1

A writing implement has a peculiarity such that the external appearance does not match with the feeling of use, and is capable of retaining the peculiarity of external appearance for a long time. The writing implement comprises a cylindrical shaft member (80), a nib member (10) fixed to one end of the shaft member (80) and adapted to exude colored ink from the tip, an ink liquid (31) stored in the shaft member (80) and constituting a part of the colored ink that exudes from the tip of the nib member (10), a coloring agent (20) added to the ink liquid (31) to form colored ink, wherein of the cylindrical side surface of the shaft member (80), at least a portion where the ink liquid (31) is stored is made transparent. Installed between the ink liquid (31) and the coloring agent storing section storing the coloring agent (20) is a coloring agent adsorbing core (41) that guides the ink liquid (31) to a coloring agent storage while arresting the coloring agent (20) dispersing toward the storage for the ink liquid (31).

IIDA HISASHI (JP)
OKUMURA SHIGERU (JP)
MATSUMOTO KAZUAKI (JP)
KOBAYASHI SEIICHI (JP)
KOBAYASHI YUSUKE (JP)

PCT/JP2002/008521

March 06, 2003

August 23, 2002

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MITSUBISHI PENCIL KABUSHIKIKAI (JP)
IIDA HISASHI (JP)
OKUMURA SHIGERU (JP)
MATSUMOTO KAZUAKI (JP)
KOBAYASHI SEIICHI (JP)
KOBAYASHI YUSUKE (JP)

A46B11/04; B43K5/00; B43K5/18; B43K7/10; B43K8/04; (IPC1-7): B43K7/10; B43K5/18; B43K8/04

WO2001070515A1

2001-09-27

US6244774B1	2001-06-12
US5433545A	1995-07-18
US3993409A	1976-11-23
US1978676A	1934-10-30
US1998930A	1935-04-23
JP2003007603Y1
JP2002014173Y1

Kuroda, Hiromichi (Oumikaikan Building 3-7, Higashi-Nihonbashi 3-chom, Chuo-ku Tokyo, JP)

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