WATER-BASED BALL-POINT PEN AND BALL-POINT PEN CHIP

PROBLEM TO BE SOLVED: To develop a water-based ball-point pen in which writing is carried out without dripping any ink drop and the pen does not become scratchy even if it is used at a writing angle exceeding 90°. SOLUTION: The ball-point pen chip 5 has an ink conduction hole 12 communicating with a...

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Bibliographic Details
Main Author NAKATANI YASUNORI
Format Patent
LanguageEnglish
Published 15.01.2004
Edition7
Subjects
BUREAU ACCESSORIES
IMPLEMENTS FOR WRITING OR DRAWING
PERFORMING OPERATIONS
TRANSPORTING
WRITING OR DRAWING IMPLEMENTS
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Summary:PROBLEM TO BE SOLVED: To develop a water-based ball-point pen in which writing is carried out without dripping any ink drop and the pen does not become scratchy even if it is used at a writing angle exceeding 90°. SOLUTION: The ball-point pen chip 5 has an ink conduction hole 12 communicating with an ink containing section 7, and a ball containing chamber 40 communicating with the ink conduction hole 12 and containing a writing ball 10. The ball containing chamber 40 has a conical bearing surface 45 for holding the writing ball 10. Open angle of the bearing surface is not larger than 95°. COPYRIGHT: (C)2004,JPO
Bibliography:Application Number: JP20020167808