WRITING INSTRUMENT

PROBLEM TO BE SOLVED: To provide a writing instrument capable of further enhancing the durability of a writing core without impairing writing performance even under high writing pressure.SOLUTION: There is provided a writing instrument having a writing part which comprises at least a writing core ma...

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Bibliographic Details
Main Author KAMIYA TOSHIFUMI
Format Patent
LanguageEnglish
Japanese
Published 30.08.2018
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 provide a writing instrument capable of further enhancing the durability of a writing core without impairing writing performance even under high writing pressure.SOLUTION: There is provided a writing instrument having a writing part which comprises at least a writing core made of a porous material and a supporter for supporting the writing core. The shear strength of the writing core is 5 N or more.SELECTED DRAWING: Figure 1 【課題】強い筆記荷重で筆記しても筆記性能を損なうことなく、筆記芯の耐久性を更に向上させることができる筆記具を提供する。【解決手段】 少なくとも、多孔体からなる筆記芯と、筆記芯を保持する保持体とから筆記部が構成される筆記具であって、筆記芯のせん断強度が５Ｎ以上であることを特徴とする筆記具。【選択図】図１
Bibliography:Application Number: JP20170028601